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-PG42-RG8C-J886

Vulnerability from github – Published: 2026-06-29 21:32 – Updated: 2026-06-30 15:30
VLAI
Details

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

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-2026-50229"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-29T21:16:44Z",
    "severity": "MODERATE"
  },
  "details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.\n\nUsers are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.",
  "id": "GHSA-pg42-rg8c-j886",
  "modified": "2026-06-30T15:30:43Z",
  "published": "2026-06-29T21:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50229"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/29/20"
    }
  ],
  "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-PHWM-87RG-27QQ

Vulnerability from github – Published: 2023-06-22 19:59 – Updated: 2023-06-22 19:59
VLAI
Summary
XWiki Platform vulnerable to reflected cross-site scripting via delattachment action
Details

Impact

It's possible to perform an XSS by forging a request to a delete attachment action with a specific attachment name. Now this XSS can be exploited only if the attacker knows the CSRF token of the user, or if the user ignores the warning about the missing CSRF token.

Patches

The vulnerability has been patched in XWiki 15.1-rc-1 and XWiki 14.10.6.

Workarounds

There's no workaround for this other than upgrading XWiki.

References

  • Jira ticket: https://jira.xwiki.org/browse/XWIKI-20339
  • Commit containing the fix: https://github.com/xwiki/xwiki-platform/commit/35e9073ffec567861e0abeea072bd97921a3decf

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki.org * Email us at Security Mailing List

Severity
8.4 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-oldcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2-milestone-3"
            },
            {
              "fixed": "14.10.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.platform:xwiki-platform-oldcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "15.0-rc-0"
            },
            {
              "fixed": "15.1-rc-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-35157"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-22T19:59:25Z",
    "nvd_published_at": "2023-06-23T19:15:09Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nIt\u0027s possible to perform an XSS by forging a request to a delete attachment action with a specific attachment name. \nNow this XSS can be exploited only if the attacker knows the CSRF token of the user, or if the user ignores the warning about the missing CSRF token. \n\n### Patches\n\nThe vulnerability has been patched in XWiki 15.1-rc-1 and XWiki 14.10.6.\n\n\n### Workarounds\n\nThere\u0027s no workaround for this other than upgrading XWiki. \n\n### References\n\n  * Jira ticket: https://jira.xwiki.org/browse/XWIKI-20339\n  * Commit containing the fix: https://github.com/xwiki/xwiki-platform/commit/35e9073ffec567861e0abeea072bd97921a3decf\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n* Email us at [Security Mailing List](mailto:security@xwiki.org)",
  "id": "GHSA-phwm-87rg-27qq",
  "modified": "2023-06-22T19:59:25Z",
  "published": "2023-06-22T19:59:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-phwm-87rg-27qq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35157"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-platform/commit/35e9073ffec567861e0abeea072bd97921a3decf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xwiki/xwiki-platform"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/XWIKI-20339"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XWiki Platform vulnerable to reflected cross-site scripting via delattachment action"
}

GHSA-PJHM-2QJV-7QPQ

Vulnerability from github – Published: 2025-08-21 21:32 – Updated: 2026-07-05 18:30
VLAI
Details

HTML injection vulnerability in the registration interface in Evolution Consulting Kft. HRmaster module v235 allows an attacker to inject HTML tags into the "keresztnév" (firstname) field, which will be sent out in an email resulting in possible Phishing scenarios against any, previously not registered, email address.

Severity
7.0 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-51989"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-21T20:15:36Z",
    "severity": "HIGH"
  },
  "details": "HTML injection vulnerability in the registration interface in Evolution Consulting Kft. HRmaster module v235 allows an attacker to inject HTML tags into the \"keresztn\u00e9v\" (firstname) field, which will be sent out in an email resulting in possible Phishing scenarios against any, previously not registered, email address.",
  "id": "GHSA-pjhm-2qjv-7qpq",
  "modified": "2026-07-05T18:30:44Z",
  "published": "2025-08-21T21:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-51989"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Apor/Vulnerabilities/tree/main/CVE-2025-51989"
    },
    {
      "type": "WEB",
      "url": "https://hrmaster.hu/modulok/toborzas-es-kivalasztas"
    },
    {
      "type": "WEB",
      "url": "https://www.evolution-consulting.hu"
    },
    {
      "type": "WEB",
      "url": "http://evolution.com"
    },
    {
      "type": "WEB",
      "url": "http://hrmaster.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PMH8-HHP9-QXXF

Vulnerability from github – Published: 2026-05-07 15:38 – Updated: 2026-05-07 15:38
VLAI
Details

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in DivvyDrive Information Technologies Inc. DivvyDrive allows Cross-Site Scripting (XSS).

This issue affects DivvyDrive: from 4.8.2.9 before 4.8.3.2.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-6002"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-07T13:16:13Z",
    "severity": "HIGH"
  },
  "details": "Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in DivvyDrive Information Technologies Inc. DivvyDrive allows Cross-Site Scripting (XSS).\n\nThis issue affects DivvyDrive: from 4.8.2.9 before 4.8.3.2.",
  "id": "GHSA-pmh8-hhp9-qxxf",
  "modified": "2026-05-07T15:38:39Z",
  "published": "2026-05-07T15:38:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6002"
    },
    {
      "type": "WEB",
      "url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0182"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PP22-GVH9-5P2M

Vulnerability from github – Published: 2022-06-30 00:00 – Updated: 2022-07-10 00:00
VLAI
Details

A vulnerability was found in TrueConf Server 4.3.7. It has been classified as problematic. Affected is an unknown function of the file /admin/group/list/. The manipulation of the argument checked_group_id leads to basic cross site scripting (Reflected). It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2017-20116"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-06-29T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability was found in TrueConf Server 4.3.7. It has been classified as problematic. Affected is an unknown function of the file /admin/group/list/. The manipulation of the argument checked_group_id leads to basic cross site scripting (Reflected). It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.",
  "id": "GHSA-pp22-gvh9-5p2m",
  "modified": "2022-07-10T00:00:47Z",
  "published": "2022-06-30T00:00:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-20116"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.96630"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/41184"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-Q425-FF95-89PQ

Vulnerability from github – Published: 2024-09-12 09:31 – Updated: 2026-06-03 18:33
VLAI
Details

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in TE Informatics V5 allows Reflected XSS.This issue affects V5: before 6.2.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-2010"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-12T09:15:05Z",
    "severity": "HIGH"
  },
  "details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in TE Informatics V5 allows Reflected XSS.This issue affects V5: before 6.2.",
  "id": "GHSA-q425-ff95-89pq",
  "modified": "2026-06-03T18:33:05Z",
  "published": "2024-09-12T09:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-2010"
    },
    {
      "type": "WEB",
      "url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-24-1456"
    },
    {
      "type": "WEB",
      "url": "https://www.usom.gov.tr/bildirim/tr-24-1456"
    }
  ],
  "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"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-Q449-G9RP-9323

Vulnerability from github – Published: 2024-11-09 15:32 – Updated: 2026-04-01 18:32
VLAI
Details

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Tobias Conrad CF7 WOW Styler allows Reflected XSS.This issue affects CF7 WOW Styler: from n/a through 1.6.8.

Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-51689"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-09T13:15:06Z",
    "severity": "HIGH"
  },
  "details": "Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027) vulnerability in Tobias Conrad CF7 WOW Styler allows Reflected XSS.This issue affects CF7 WOW Styler: from n/a through 1.6.8.",
  "id": "GHSA-q449-g9rp-9323",
  "modified": "2026-04-01T18:32:20Z",
  "published": "2024-11-09T15:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-51689"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/cf7-styler/vulnerability/wordpress-cf7-wow-styler-plugin-1-6-8-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/vulnerability/cf7-styler/wordpress-cf7-wow-styler-plugin-1-6-8-reflected-cross-site-scripting-xss-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:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-Q494-C83W-2XRF

Vulnerability from github – Published: 2025-10-03 03:30 – Updated: 2025-10-03 03:30
VLAI
Details

The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript event handlers. This vulnerability allows a user with Contributor access or higher to create a post containing a malicious JavaScript payload.

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-2025-11241"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-03T02:15:30Z",
    "severity": "MODERATE"
  },
  "details": "The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript event handlers. This vulnerability allows a user with Contributor access or higher to create a post containing a malicious JavaScript payload.",
  "id": "GHSA-q494-c83w-2xrf",
  "modified": "2025-10-03T03:30:27Z",
  "published": "2025-10-03T03:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11241"
    },
    {
      "type": "WEB",
      "url": "https://developer.yoast.com/changelog/yoast-seo-premium/26.0"
    },
    {
      "type": "WEB",
      "url": "https://sec.stealthcopter.com/regexss"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a6e3645d-ed1b-4c51-a463-c2691cb7168d?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"
    }
  ]
}

GHSA-Q586-MXQV-2PPX

Vulnerability from github – Published: 2025-10-25 06:30 – Updated: 2025-11-26 15:34
VLAI
Details

The ShopLentor – WooCommerce Builder for Elementor & Gutenberg +21 Modules – All in One Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'button_exist_text' parameter in the 'wishsuite_button' shortcode in all versions up to, and including, 3.2.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses 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-2025-11823"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-25T05:15:36Z",
    "severity": "MODERATE"
  },
  "details": "The ShopLentor \u2013 WooCommerce Builder for Elementor \u0026 Gutenberg +21 Modules \u2013 All in One Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027button_exist_text\u0027 parameter in the \u0027wishsuite_button\u0027 shortcode in all versions up to, and including, 3.2.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.",
  "id": "GHSA-q586-mxqv-2ppx",
  "modified": "2025-11-26T15:34:10Z",
  "published": "2025-10-25T06:30:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11823"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/woolentor-addons/tags/3.2.2/includes/modules/wishlist/includes/classes/Frontend/Shortcode.php#L107"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/woolentor-addons/tags/3.2.2/includes/modules/wishlist/includes/templates/wishsuite-button-exist.php#L1"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2d45afd4-9a1f-402c-86e3-8e3d6d7178d3?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"
    }
  ]
}

GHSA-Q6XV-JM4V-349H

Vulnerability from github – Published: 2024-06-26 19:03 – Updated: 2024-06-26 21:56
VLAI
Summary
Cross-site Scripting in ZenUML
Details

Summary

Markdown-based comments in the ZenUML diagram syntax are susceptible to Cross-site Scripting (XSS).

Details

The comment feature allows the user to attach small notes for reference. This feature allows the user to enter in their comment in markdown comment, allowing them to use common markdown features, such as ** for bolded text. However, the markdown text is currently not sanitized before rendering, allowing an attacker to enter a malicious payload for the comment which leads to XSS.

https://github.com/mermaid-js/zenuml-core/blob/dcfee8cde42673c09e19401f43ad8506658c8442/src/components/DiagramFrame/SeqDiagram/MessageLayer/Block/Statement/Comment/Comment.vue#L65

PoC

// p<img onerror=alert(1) src=""/>
A->B:hi

Above is a POC diagram payload that results in an XSS.

Here is a similar POC in mermaid.live: https://mermaid.live/edit#pako:eNpNjrFuwyAQhl8F3dRK1DaQGhs1kVq1Y6duFQsylwTVgEWw1MTyuxc5S7df39399y0wRIug4IZh9qMOdU2mF-dPJAZMKaa9GTHlB_ZILmnYa9BQH3R4fTq8qbMDCh6TN86WhkUHQjTkM3rUoEq0Jv2Ui7CWPTPn-HUNA6icZqQwT9ZkfHfmlIwHdTTjpVC0Lsf0eVfazChMJoBa4BdUL6uGC8n7TrCGd5zCFRRnXbVjvBVNK3gJXbtSuMVYSlnFC-Kyf961UshWbmXf2-y_xcf29c7WP2yrVC0

Impact

This puts existing applications that use ZenUML unsandboxed at risk of arbitrary JavaScript execution when rendering user-controlled diagrams.

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@zenuml/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.23.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-38527"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-06-26T19:03:54Z",
    "nvd_published_at": "2024-06-26T20:15:16Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nMarkdown-based comments in the ZenUML diagram syntax are susceptible to Cross-site Scripting (XSS).\n\n### Details\n\nThe comment feature allows the user to attach small notes for reference. This feature allows the user to enter in their comment in markdown comment, allowing them to use common markdown features, such as `**` for bolded text. However, the markdown text is currently not sanitized before rendering, allowing an attacker to enter a malicious payload for the comment which leads to XSS.\n\nhttps://github.com/mermaid-js/zenuml-core/blob/dcfee8cde42673c09e19401f43ad8506658c8442/src/components/DiagramFrame/SeqDiagram/MessageLayer/Block/Statement/Comment/Comment.vue#L65\n\n### PoC\n\n```\n// p\u003cimg onerror=alert(1) src=\"\"/\u003e\nA-\u003eB:hi\n```\n\nAbove is a POC diagram payload that results in an XSS.\n\nHere is a similar POC in mermaid.live: https://mermaid.live/edit#pako:eNpNjrFuwyAQhl8F3dRK1DaQGhs1kVq1Y6duFQsylwTVgEWw1MTyuxc5S7df39399y0wRIug4IZh9qMOdU2mF-dPJAZMKaa9GTHlB_ZILmnYa9BQH3R4fTq8qbMDCh6TN86WhkUHQjTkM3rUoEq0Jv2Ui7CWPTPn-HUNA6icZqQwT9ZkfHfmlIwHdTTjpVC0Lsf0eVfazChMJoBa4BdUL6uGC8n7TrCGd5zCFRRnXbVjvBVNK3gJXbtSuMVYSlnFC-Kyf961UshWbmXf2-y_xcf29c7WP2yrVC0\n\n### Impact\n\nThis puts existing applications that use ZenUML **unsandboxed** at risk of arbitrary JavaScript execution when rendering user-controlled diagrams.",
  "id": "GHSA-q6xv-jm4v-349h",
  "modified": "2024-06-26T21:56:14Z",
  "published": "2024-06-26T19:03:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mermaid-js/zenuml-core/security/advisories/GHSA-q6xv-jm4v-349h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38527"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mermaid-js/zenuml-core/commit/ad7545b33f5f27466cbf357beb65969ca1953e3c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mermaid-js/zenuml-core"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-site Scripting in ZenUML"
}
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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