Common Weakness Enumeration

CWE-80

Allowed

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Abstraction: Variant · Status: Incomplete

API response cwe.mitre.org

The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

936 vulnerabilities reference this CWE, most recent first.

GHSA-3QCV-5PQJ-C2H7

Vulnerability from github – Published: 2026-03-25 18:31 – Updated: 2026-03-25 18:31
VLAI
Details

GitLab has remediated an issue in GitLab EE affecting all versions from 15.4 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to add email addresses to targeted user accounts due to improper sanitization of HTML content.

Severity
7.7 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-2995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T17:16:58Z",
    "severity": "HIGH"
  },
  "details": "GitLab has remediated an issue in GitLab EE affecting all versions from 15.4 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to add email addresses to targeted user accounts due to improper sanitization of HTML content.",
  "id": "GHSA-3qcv-5pqj-c2h7",
  "modified": "2026-03-25T18:31:53Z",
  "published": "2026-03-25T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2995"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/3564600"
    },
    {
      "type": "WEB",
      "url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/591065"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3V4Q-XC3V-GWVX

Vulnerability from github – Published: 2025-07-08 03:30 – Updated: 2025-07-08 03:30
VLAI
Details

SAP�BusinessObjects Business�Intelligence Platform (Web Intelligence) is vulnerable to HTML Injection, allowing an attacker with basic user privileges to inject malicious code into specific input fields. This could lead to unintended redirects or manipulation of application behavior, such as redirecting users to attacker-controlled domains. This issue primarily affects the integrity of the system. However, the confidentiality and availability of the system remain unaffected.

Severity
4.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2025-31326"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-08T01:15:21Z",
    "severity": "MODERATE"
  },
  "details": "SAP\ufffdBusinessObjects Business\ufffdIntelligence Platform (Web Intelligence) is vulnerable to HTML Injection, allowing an attacker with basic user privileges to inject malicious code into specific input fields. This could lead to unintended redirects or manipulation of application behavior, such as redirecting users to attacker-controlled domains. This issue primarily affects the integrity of the system. However, the confidentiality and availability of the system remain unaffected.",
  "id": "GHSA-3v4q-xc3v-gwvx",
  "modified": "2025-07-08T03:30:59Z",
  "published": "2025-07-08T03:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31326"
    },
    {
      "type": "WEB",
      "url": "https://me.sap.com/notes/3573199"
    },
    {
      "type": "WEB",
      "url": "https://url.sap/sapsecuritypatchday"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3V85-PF4R-695W

Vulnerability from github – Published: 2025-12-18 09:30 – Updated: 2026-01-20 15:32
VLAI
Details

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Stockie Extra stockie-extra allows Code Injection.This issue affects Stockie Extra: from n/a through <= 1.2.11.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2025-64225"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-18T08:16:12Z",
    "severity": "MODERATE"
  },
  "details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Stockie Extra stockie-extra allows Code Injection.This issue affects Stockie Extra: from n/a through \u003c= 1.2.11.",
  "id": "GHSA-3v85-pf4r-695w",
  "modified": "2026-01-20T15:32:31Z",
  "published": "2025-12-18T09:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64225"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/stockie-extra/vulnerability/wordpress-stockie-extra-plugin-1-2-11-content-injection-vulnerability?_s_id=cve"
    },
    {
      "type": "WEB",
      "url": "https://vdp.patchstack.com/database/Wordpress/Plugin/stockie-extra/vulnerability/wordpress-stockie-extra-plugin-1-2-11-content-injection-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3W28-36P9-W929

Vulnerability from github – Published: 2026-06-23 17:33 – Updated: 2026-06-23 17:33
VLAI
Summary
Gogs's Unauthenticated Jupyter Notebook (ipynb) Sanitizer allows arbitrary data: URIs leading to XSS
Details

Summary

The Jupyter Notebook (ipynb) sanitizer endpoint at POST /-/api/sanitize_ipynb allows arbitrary data: URIs without proper restrictions, potentially leading to Cross-Site Scripting (XSS). The endpoint uses bluemonday.UGCPolicy() with p.AllowURLSchemes("data") which permits all data URI schemes including data:text/html, enabling attackers to inject malicious HTML/JavaScript. Additionally, the endpoint has no authentication middleware, allowing any registered user to exploit this vulnerability.

Severity

High

Affected Versions

All versions using the vulnerable endpoint

Vulnerability Details

  • CVE ID: (To be assigned)
  • Entry Point: POST /-/api/sanitize_ipynb
  • Attack Vector: Network
  • Authentication Required: No (only needs a registered user account)

Impact

An attacker with a registered user account can:

  • Send malicious HTML containing data:text/html URIs to the sanitization endpoint
  • Receive sanitized but attacker-controlled HTML in the response
  • Execute arbitrary JavaScript in the attacker's browser context through XSS
  • Potentially exploit other users if the sanitized output is rendered in their context

The vulnerability has higher severity because:

  1. No authentication required (only needs a registered user account)
  2. Unlike the safer pattern in internal/markup/sanitizer.go:39 which uses isSafeDataURI to only allow safe image MIME types, this endpoint allows ALL data URIs including HTML
  3. The returned HTML can be used to craft XSS attacks

Proof of Concept

Attacker sends a POST request to the sanitization endpoint:

POST /-/api/sanitize_ipynb HTTP/1.1
Host: target.gogs.instance
Content-Type: text/plain

<a href="data:text/html,<script>alert(document.cookie)</script>">click</a>

The server returns the sanitized HTML with the data URI preserved:

<a href="data:text/html,<script>alert(document.cookie)</script>">click</a>

When this HTML is rendered in a browser, the JavaScript within the data URI will execute, leading to XSS.

Affected Component

File: internal/app/api.go:10-16

func ipynbSanitizer() *bluemonday.Policy {
    p := bluemonday.UGCPolicy()
    p.AllowAttrs("class", "data-prompt-number").OnElements("div")
    p.AllowAttrs("class").OnElements("img")
    p.AllowURLSchemes("data")  // <-- VULNERABLE: allows all data URIs
    return p
}

File: cmd/gogs/web.go:681-683 - No authentication middleware

m.Group("/-", func() {
    m.Get("/metrics", app.MetricsFilter(), promhttp.Handler())
    m.Group("/api", func() {
        m.Post("/sanitize_ipynb", app.SanitizeIpynb())  // <-- No auth middleware
    })
})

Root Cause

  1. Unrestricted data URI scheme: The code at internal/app/api.go:14 uses p.AllowURLSchemes("data") without any restriction, unlike the safer implementation in internal/markup/sanitizer.go:39 which uses AllowURLSchemeWithCustomPolicy("data", isSafeDataURI) to only allow safe image MIME types.

  2. No authentication: The endpoint at cmd/gogs/web.go:682 does not have any authentication middleware applied, making it accessible to any registered user.

  3. Insufficient validation: The sanitization only removes dangerous tags/attributes but preserves data URIs, allowing data:text/html payloads to pass through.

Suggested Fix

Option 1: Use the same safe pattern as internal/markup/sanitizer.go

Replace p.AllowURLSchemes("data") with:

p.AllowURLSchemeWithCustomPolicy("data", isSafeDataURI)

Where isSafeDataURI is a function that only allows safe image MIME types (image/png, image/jpeg, image/gif, etc.).

Option 2: Add authentication middleware

Apply appropriate authentication to the endpoint:

m.Post("/sanitize_ipynb", middleware.signIn, app.SanitizeIpynb())

Option 3: Disable data URI scheme entirely

If data URIs are not required for ipynb sanitization:

// Remove this line entirely:
// p.AllowURLSchemes("data")
Severity
5.4 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "gogs.io/gogs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.14.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-52816"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-23T17:33:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nThe Jupyter Notebook (ipynb) sanitizer endpoint at `POST /-/api/sanitize_ipynb` allows arbitrary `data:` URIs without proper restrictions, potentially leading to Cross-Site Scripting (XSS). The endpoint uses `bluemonday.UGCPolicy()` with `p.AllowURLSchemes(\"data\")` which permits all data URI schemes including `data:text/html`, enabling attackers to inject malicious HTML/JavaScript. Additionally, the endpoint has no authentication middleware, allowing any registered user to exploit this vulnerability.\n\n## Severity\n\n**High**\n\n## Affected Versions\n\nAll versions using the vulnerable endpoint\n\n## Vulnerability Details\n\n- **CVE ID**: (To be assigned)\n- **Entry Point**: `POST /-/api/sanitize_ipynb`\n- **Attack Vector**: Network\n- **Authentication Required**: No (only needs a registered user account)\n\n## Impact\n\nAn attacker with a registered user account can:\n\n- Send malicious HTML containing `data:text/html` URIs to the sanitization endpoint\n- Receive sanitized but attacker-controlled HTML in the response\n- Execute arbitrary JavaScript in the attacker\u0027s browser context through XSS\n- Potentially exploit other users if the sanitized output is rendered in their context\n\nThe vulnerability has higher severity because:\n\n1. No authentication required (only needs a registered user account)\n2. Unlike the safer pattern in `internal/markup/sanitizer.go:39` which uses `isSafeDataURI` to only allow safe image MIME types, this endpoint allows ALL data URIs including HTML\n3. The returned HTML can be used to craft XSS attacks\n\n## Proof of Concept\n\nAttacker sends a POST request to the sanitization endpoint:\n\n```http\nPOST /-/api/sanitize_ipynb HTTP/1.1\nHost: target.gogs.instance\nContent-Type: text/plain\n\n\u003ca href=\"data:text/html,\u003cscript\u003ealert(document.cookie)\u003c/script\u003e\"\u003eclick\u003c/a\u003e\n```\n\nThe server returns the sanitized HTML with the data URI preserved:\n\n```html\n\u003ca href=\"data:text/html,\u003cscript\u003ealert(document.cookie)\u003c/script\u003e\"\u003eclick\u003c/a\u003e\n```\n\nWhen this HTML is rendered in a browser, the JavaScript within the data URI will execute, leading to XSS.\n\n## Affected Component\n\n**File**: `internal/app/api.go:10-16`\n\n```go\nfunc ipynbSanitizer() *bluemonday.Policy {\n\tp := bluemonday.UGCPolicy()\n\tp.AllowAttrs(\"class\", \"data-prompt-number\").OnElements(\"div\")\n\tp.AllowAttrs(\"class\").OnElements(\"img\")\n\tp.AllowURLSchemes(\"data\")  // \u003c-- VULNERABLE: allows all data URIs\n\treturn p\n}\n```\n\n**File**: `cmd/gogs/web.go:681-683` - No authentication middleware\n\n```go\nm.Group(\"/-\", func() {\n\tm.Get(\"/metrics\", app.MetricsFilter(), promhttp.Handler())\n\tm.Group(\"/api\", func() {\n\t\tm.Post(\"/sanitize_ipynb\", app.SanitizeIpynb())  // \u003c-- No auth middleware\n\t})\n})\n```\n\n## Root Cause\n\n1. **Unrestricted data URI scheme**: The code at `internal/app/api.go:14` uses `p.AllowURLSchemes(\"data\")` without any restriction, unlike the safer implementation in `internal/markup/sanitizer.go:39` which uses `AllowURLSchemeWithCustomPolicy(\"data\", isSafeDataURI)` to only allow safe image MIME types.\n\n2. **No authentication**: The endpoint at `cmd/gogs/web.go:682` does not have any authentication middleware applied, making it accessible to any registered user.\n\n3. **Insufficient validation**: The sanitization only removes dangerous tags/attributes but preserves data URIs, allowing `data:text/html` payloads to pass through.\n\n## Suggested Fix\n\n**Option 1**: Use the same safe pattern as `internal/markup/sanitizer.go`\n\nReplace `p.AllowURLSchemes(\"data\")` with:\n\n```go\np.AllowURLSchemeWithCustomPolicy(\"data\", isSafeDataURI)\n```\n\nWhere `isSafeDataURI` is a function that only allows safe image MIME types (image/png, image/jpeg, image/gif, etc.).\n\n**Option 2**: Add authentication middleware\n\nApply appropriate authentication to the endpoint:\n\n```go\nm.Post(\"/sanitize_ipynb\", middleware.signIn, app.SanitizeIpynb())\n```\n\n**Option 3**: Disable data URI scheme entirely\n\nIf data URIs are not required for ipynb sanitization:\n\n```go\n// Remove this line entirely:\n// p.AllowURLSchemes(\"data\")\n```",
  "id": "GHSA-3w28-36p9-w929",
  "modified": "2026-06-23T17:33:32Z",
  "published": "2026-06-23T17:33:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/security/advisories/GHSA-3w28-36p9-w929"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/pull/8326"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/commit/dd1bd9837aa196b3ed3a8ee21e5727b5d7a986a3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gogs/gogs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/releases/tag/v0.14.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Gogs\u0027s Unauthenticated Jupyter Notebook (ipynb) Sanitizer allows arbitrary data: URIs leading to XSS"
}

GHSA-3WV2-V64P-7Q7M

Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2022-05-24 17:36
VLAI
Details

A vulnerability has been identified in XHQ (All Versions < 6.1). The web interface could allow injections that could lead to XSS attacks if unsuspecting users are tricked into accessing a malicious link.

Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2019-19285"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-14T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability has been identified in XHQ (All Versions \u003c 6.1). The web interface could allow injections that could lead to XSS attacks if unsuspecting users are tricked into accessing a malicious link.",
  "id": "GHSA-3wv2-v64p-7q7m",
  "modified": "2022-05-24T17:36:14Z",
  "published": "2022-05-24T17:36:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19285"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-712690.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-3WXG-W96J-8HQ9

Vulnerability from github – Published: 2023-05-26 13:54 – Updated: 2023-05-26 21:50
VLAI
Summary
CraftCMS stored XSS in Quick Post widget error message
Details

Summary

The platform does not filter input and encode output in Quick Post validation error message, which can deliver an XSS payload.

Details

Old CVE fixed the XSS in label HTML but didn’t fix it when clicking save.

PoC

  1. Login at admin
  2. Go to setting
  3. Create a Section
  4. On Entry page, click Edit label
  5. Inject the XSS payload into the label and save
  6. On the admin dashboard choose new widget -> Quick Post

  7. In Quick Post, click save with blank slug; The XSS will be executed

    "errors":{"title":["alert('nono') cannot be blank."],"slug":["Slug cannot be blank."]

Fixed in https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888

Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0-RC1"
            },
            {
              "fixed": "4.4.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.8.5"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.8.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-33194"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-05-26T13:54:11Z",
    "nvd_published_at": "2023-05-26T21:15:20Z",
    "severity": "LOW"
  },
  "details": "### Summary\nThe platform does not filter input and encode output in Quick Post validation error message, which can deliver an XSS payload.\n\n### Details\nOld CVE fixed the XSS in label HTML but didn\u2019t fix it when clicking save.\n\n### PoC\n1. Login at admin\n2. Go to setting\n3. Create a Section\n4. On Entry page, click Edit label\n5. Inject the XSS payload into the label and save\n6. On the admin dashboard choose new widget -\u003e Quick Post\n7. In Quick Post, click save with blank slug; The XSS will be executed\n\n    \"errors\":{\"title\":[\"\u003cscript\u003ealert(\u0027nono\u0027)\u003c/script\u003e cannot be blank.\"],\"slug\":[\"Slug cannot be blank.\"]\n\nFixed in https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888\n",
  "id": "GHSA-3wxg-w96j-8hq9",
  "modified": "2023-05-26T21:50:40Z",
  "published": "2023-05-26T13:54:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-3wxg-w96j-8hq9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33194"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/craftcms/cms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/releases/tag/4.4.6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CraftCMS stored XSS in Quick Post widget error message"
}

GHSA-44CQ-GV9F-H346

Vulnerability from github – Published: 2023-08-04 00:30 – Updated: 2024-01-25 18:30
VLAI
Details

A vulnerability in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to conduct XSS attacks. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2023-20181"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-08-03T22:15:10Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to conduct XSS attacks. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.",
  "id": "GHSA-44cq-gv9f-h346",
  "modified": "2024-01-25T18:30:37Z",
  "published": "2023-08-04T00:30:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20181"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-web-multi-7kvPmu2F"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-44QP-5PM8-6J8P

Vulnerability from github – Published: 2022-05-24 17:19 – Updated: 2025-10-22 00:31
VLAI
Details

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2020-13965"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-09T03:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.",
  "id": "GHSA-44qp-5pm8-6j8p",
  "modified": "2025-10-22T00:31:55Z",
  "published": "2022-05-24T17:19:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13965"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.3.12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.4.5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK"
    },
    {
      "type": "WEB",
      "url": "https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4700"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-4693-86X5-G35M

Vulnerability from github – Published: 2024-10-29 09:30 – Updated: 2024-10-29 09:30
VLAI
Details

The SEUR Oficial plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'change_service' parameter in all versions up to, and including, 2.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-9438"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-29T09:15:12Z",
    "severity": "MODERATE"
  },
  "details": "The SEUR Oficial plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the \u0027change_service\u0027 parameter in all versions up to, and including, 2.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.",
  "id": "GHSA-4693-86x5-g35m",
  "modified": "2024-10-29T09:30:52Z",
  "published": "2024-10-29T09:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9438"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/seur/trunk/core/pages/seur-get-labels.php#L60"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3176965/seur/trunk/core/pages/seur-get-labels.php"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/88edf229-2be2-49d0-b500-e8ff7708f806?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-47QP-9GRV-HJC7

Vulnerability from github – Published: 2025-05-15 06:31 – Updated: 2025-05-15 06:31
VLAI
Details

The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-4126"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-15T04:16:17Z",
    "severity": "MODERATE"
  },
  "details": "The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.",
  "id": "GHSA-47qp-9grv-hjc7",
  "modified": "2025-05-15T06:31:12Z",
  "published": "2025-05-15T06:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4126"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}
Mitigation
Implementation

Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.

Mitigation MIT-30.1
Implementation

Strategy: Output Encoding

  • Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
  • The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
Mitigation MIT-43
Implementation

With Struts, write all data from form beans with the bean's filter attribute set to true.

Mitigation MIT-31
Implementation

Strategy: Attack Surface Reduction

To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XmlHttpRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.

CAPEC-18: XSS Targeting Non-Script Elements

This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an adversary to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote adversary to collect and interpret the output of said attack.

CAPEC-193: PHP Remote File Inclusion

In this pattern the adversary is able to load and execute arbitrary code remotely available from the application. This is usually accomplished through an insecurely configured PHP runtime environment and an improperly sanitized "include" or "require" call, which the user can then control to point to any web-accessible file. This allows adversaries to hijack the targeted application and force it to execute their own instructions.

CAPEC-32: XSS Through HTTP Query Strings

An adversary embeds malicious script code in the parameters of an HTTP query string and convinces a victim to submit the HTTP request that contains the query string to a vulnerable web application. The web application then procedes to use the values parameters without properly validation them first and generates the HTML code that will be executed by the victim's browser.

CAPEC-86: XSS Through HTTP Headers

An adversary exploits web applications that generate web content, such as links in a HTML page, based on unvalidated or improperly validated data submitted by other actors. XSS in HTTP Headers attacks target the HTTP headers which are hidden from most users and may not be validated by web applications.

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