CWE-80
AllowedImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Abstraction: Variant · Status: Incomplete
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-9F2J-MP7J-48WF
Vulnerability from github – Published: 2023-10-14 15:30 – Updated: 2023-10-14 15:30A vulnerability, which was classified as problematic, has been found in ZZZCMS 2.2.0. This issue affects some unknown processing of the component Personal Profile Page. The manipulation leads to basic cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-242147.
{
"affected": [],
"aliases": [
"CVE-2023-5582"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-14T14:15:10Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as problematic, has been found in ZZZCMS 2.2.0. This issue affects some unknown processing of the component Personal Profile Page. The manipulation leads to basic cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-242147.",
"id": "GHSA-9f2j-mp7j-48wf",
"modified": "2023-10-14T15:30:17Z",
"published": "2023-10-14T15:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5582"
},
{
"type": "WEB",
"url": "https://github.com/Jacky-Y/vuls/blob/main/vul8.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.242147"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.242147"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-9F95-HHG4-PG4F
Vulnerability from github – Published: 2023-03-01 19:19 – Updated: 2024-05-20 21:48Description
teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. Versions prior to v0.1.1 are vulnerable to bypassing common web attack rules when a specific HTML entities payload is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim's browser and compromise the security of the web application. The vulnerability exists due to teler-waf failure to properly sanitize and filter HTML entities in user input.
Impact
An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim's browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim's browser and perform malicious actions.
Patches
Version v0.1.1 includes a patch for this vulnerability.
Workarounds
We advised updating their installations to version v0.1.1 and frontwards immediately.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/kitabisa/teler-waf"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-26046"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-01T19:19:43Z",
"nvd_published_at": "2023-03-02T01:15:00Z",
"severity": "MODERATE"
},
"details": "### Description\n\nteler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. Versions prior to v0.1.1 are vulnerable to bypassing common web attack rules when a specific HTML entities payload is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim\u0027s browser and compromise the security of the web application. The vulnerability exists due to teler-waf failure to properly sanitize and filter HTML entities in user input.\n\n### Impact\n\nAn attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim\u0027s browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim\u0027s browser and perform malicious actions.\n\n### Patches\n\nVersion [v0.1.1](https://github.com/kitabisa/teler-waf/releases/tag/v0.1.1) includes a patch for this vulnerability.\n\n### Workarounds\n\nWe advised updating their installations to version `v0.1.1` and frontwards immediately.",
"id": "GHSA-9f95-hhg4-pg4f",
"modified": "2024-05-20T21:48:03Z",
"published": "2023-03-01T19:19:43Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/kitabisa/teler-waf/security/advisories/GHSA-9f95-hhg4-pg4f"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26046"
},
{
"type": "WEB",
"url": "https://github.com/kitabisa/teler-waf/commit/d1d49cfddfa3ec2adad962870f14b85cd1aaf739"
},
{
"type": "PACKAGE",
"url": "https://github.com/kitabisa/teler-waf"
},
{
"type": "WEB",
"url": "https://github.com/kitabisa/teler-waf/compare/v0.1.0...v0.1.1"
},
{
"type": "WEB",
"url": "https://github.com/kitabisa/teler-waf/releases/tag/v0.1.1"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2023-1597"
}
],
"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"
}
],
"summary": "teler-waf subject to Bypass of Common Web Attack Threat Rule with HTML Entities Payload"
}
GHSA-9MXH-W7M8-8R8C
Vulnerability from github – Published: 2023-08-17 00:30 – Updated: 2024-01-25 18:30A vulnerability in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager (EPNM) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface on an affected device.
The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. 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.
{
"affected": [],
"aliases": [
"CVE-2023-20222"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-16T22:15:11Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager (EPNM) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface on an affected device.\n\n The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. 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-9mxh-w7m8-8r8c",
"modified": "2024-01-25T18:30:40Z",
"published": "2023-08-17T00:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20222"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-epnm-storedxss-tTjO62r"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-9P48-8GPF-WWMC
Vulnerability from github – Published: 2025-03-15 06:30 – Updated: 2025-03-28 15:31The WordPress form builder plugin for contact forms, surveys and quizzes – Tripetto plugin for WordPress is vulnerable to Stored Cross-Site Scripting via attachment uploads in all versions up to, and including, 8.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the uploaded file.
{
"affected": [],
"aliases": [
"CVE-2024-13497"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-15T05:15:45Z",
"severity": "HIGH"
},
"details": "The WordPress form builder plugin for contact forms, surveys and quizzes \u2013 Tripetto plugin for WordPress is vulnerable to Stored Cross-Site Scripting via attachment uploads in all versions up to, and including, 8.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the uploaded file.",
"id": "GHSA-9p48-8gpf-wwmc",
"modified": "2025-03-28T15:31:51Z",
"published": "2025-03-15T06:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-13497"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/tripetto/trunk/lib/attachments.php#L46"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3251202%40tripetto%2Ftrunk\u0026old=3231968%40tripetto%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/fbbe006c-1afc-4c8b-a9f3-ffb21cdabb54?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-9R25-J996-8H38
Vulnerability from github – Published: 2022-08-11 00:00 – Updated: 2026-04-14 09:30A vulnerability has been identified in SCALANCE M-800 / S615 (All versions), SCALANCE SC-600 family (All versions < V2.3.1), SCALANCE W-1700 IEEE 802.11ac family (All versions), SCALANCE W-700 IEEE 802.11ax family (All versions), SCALANCE W-700 IEEE 802.11n family (All versions), SCALANCE XB-200 switch family (All versions), SCALANCE XC-200 switch family (All versions), SCALANCE XF-200BA switch family (All versions), SCALANCE XM-400 Family (All versions), SCALANCE XP-200 switch family (All versions), SCALANCE XR-300WG switch family (All versions), SCALANCE XR-500 Family (All versions). Affected devices do not properly sanitize data introduced by an user when rendering the web interface. This could allow an authenticated remote attacker with administrative privileges to inject code and lead to a DOM-based XSS.
{
"affected": [],
"aliases": [
"CVE-2022-36325"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-10T12:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been identified in SCALANCE M-800 / S615 (All versions), SCALANCE SC-600 family (All versions \u003c V2.3.1), SCALANCE W-1700 IEEE 802.11ac family (All versions), SCALANCE W-700 IEEE 802.11ax family (All versions), SCALANCE W-700 IEEE 802.11n family (All versions), SCALANCE XB-200 switch family (All versions), SCALANCE XC-200 switch family (All versions), SCALANCE XF-200BA switch family (All versions), SCALANCE XM-400 Family (All versions), SCALANCE XP-200 switch family (All versions), SCALANCE XR-300WG switch family (All versions), SCALANCE XR-500 Family (All versions). Affected devices do not properly sanitize data introduced by an user when rendering the web interface. This could allow an authenticated remote attacker with administrative privileges to inject code and lead to a DOM-based XSS.",
"id": "GHSA-9r25-j996-8h38",
"modified": "2026-04-14T09:30:41Z",
"published": "2022-08-11T00:00:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36325"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019200.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-710008.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-710008.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-9R9J-57RF-F6VJ
Vulnerability from github – Published: 2022-09-16 17:39 – Updated: 2022-09-16 17:39Impact
It's possible to store JavaScript in an attachment name, which will be executed by anyone trying to move the corresponding attachment.
For example, an attachment with name ><img src=1 onerror=alert(1)>.jpg will execute the alert.
Patches
This issue has been patched in XWiki 14.4RC1.
Workarounds
It is possible to fix the vulnerability by copying moveStep1.vm to webapp/xwiki/templates/moveStep1.vm and replace
#set($titleToDisplay = $services.localization.render('attachment.move.title',
[$attachment.name, $escapetool.xml($doc.plainTitle), $doc.getURL()]))
by
#set($titleToDisplay = $services.localization.render('attachment.move.title', [
$escapetool.xml($attachment.name),
$escapetool.xml($doc.plainTitle),
$escapetool.xml($doc.getURL())
]))
See the corresponding patch.
References
- https://jira.xwiki.org/browse/XWIKI-19667
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
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-attachment-ui"
},
"ranges": [
{
"events": [
{
"introduced": "14.0-rc-1"
},
{
"fixed": "14.4-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-36097"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-16T17:39:08Z",
"nvd_published_at": "2022-09-08T21:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\n\nIt\u0027s possible to store JavaScript in an attachment name, which will be executed by anyone trying to move the corresponding attachment.\n\nFor example, an attachment with name `\u003e\u003cimg src=1 onerror=alert(1)\u003e.jpg` will execute the alert.\n\n### Patches\nThis issue has been patched in XWiki 14.4RC1.\n\n### Workarounds\nIt is possible to fix the vulnerability by copying [moveStep1.vm](https://raw.githubusercontent.com/xwiki/xwiki-platform/xwiki-platform-14.0-rc-1/xwiki-platform-core/xwiki-platform-attachment/xwiki-platform-attachment-api/src/main/resources/templates/attachment/moveStep1.vm) to `webapp/xwiki/templates/moveStep1.vm` and replace \n\n```\n#set($titleToDisplay = $services.localization.render(\u0027attachment.move.title\u0027, \n [$attachment.name, $escapetool.xml($doc.plainTitle), $doc.getURL()]))\n```\n\nby \n\n```\n#set($titleToDisplay = $services.localization.render(\u0027attachment.move.title\u0027, [\n $escapetool.xml($attachment.name), \n $escapetool.xml($doc.plainTitle), \n $escapetool.xml($doc.getURL())\n]))\n```\n\nSee the corresponding [patch](https://github.com/xwiki/xwiki-platform/commit/fbc4bfbae4f6ce8109addb281de86a03acdb9277).\n\n### References\n\n- https://jira.xwiki.org/browse/XWIKI-19667\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n- Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n- Email us at [Security Mailing List](mailto:security@xwiki.org)\n",
"id": "GHSA-9r9j-57rf-f6vj",
"modified": "2022-09-16T17:39:08Z",
"published": "2022-09-16T17:39:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9r9j-57rf-f6vj"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36097"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/fbc4bfbae4f6ce8109addb281de86a03acdb9277"
},
{
"type": "PACKAGE",
"url": "https://github.com/xwiki/xwiki-platform"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XWIKI-19667"
},
{
"type": "WEB",
"url": "https://raw.githubusercontent.com/xwiki/xwiki-platform/xwiki-platform-14.0-rc-1/xwiki-platform-core/xwiki-platform-attachment/xwiki-platform-attachment-api/src/main/resources/templates/attachment/moveStep1.vm"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
}
],
"summary": "XWiki Platform Attachment UI vulnerable to cross-site scripting in the move attachment form"
}
GHSA-9VRR-RMVR-4FGQ
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2024-04-04 01:15A vulnerability has been identified in Spectrum Power 3 (Corporate User Interface) (All versions <= v3.11), Spectrum Power 4 (Corporate User Interface) (Version v4.75), Spectrum Power 5 (Corporate User Interface) (All versions <= v5.50), Spectrum Power 7 (Corporate User Interface) (All versions <= v2.20). The web server could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into accessing a malicious link. User interaction is required for a successful exploitation. The user does not need to be logged into the web interface in order for the exploitation to succeed. At the stage of publishing this security advisory no public exploitation is known.
{
"affected": [],
"aliases": [
"CVE-2019-10933"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-11T22:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been identified in Spectrum Power 3 (Corporate User Interface) (All versions \u003c= v3.11), Spectrum Power 4 (Corporate User Interface) (Version v4.75), Spectrum Power 5 (Corporate User Interface) (All versions \u003c= v5.50), Spectrum Power 7 (Corporate User Interface) (All versions \u003c= v2.20). The web server could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into accessing a malicious link. User interaction is required for a successful exploitation. The user does not need to be logged into the web interface in order for the exploitation to succeed. At the stage of publishing this security advisory no public exploitation is known.",
"id": "GHSA-9vrr-rmvr-4fgq",
"modified": "2024-04-04T01:15:22Z",
"published": "2022-05-24T16:50:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10933"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-747162.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C22H-M2P9-C6W3
Vulnerability from github – Published: 2025-01-14 15:30 – Updated: 2025-01-14 15:30An improper neutralization of script-related html tags in a web page (basic xss) in Fortinet FortiPortal 6.0.0 through 6.0.14 allows attacker to execute unauthorized code or commands via html injection.
{
"affected": [],
"aliases": [
"CVE-2024-52967"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T14:15:33Z",
"severity": "LOW"
},
"details": "An improper neutralization of script-related html tags in a web page (basic xss) in Fortinet FortiPortal 6.0.0 through 6.0.14 allows attacker to execute unauthorized code or commands via html injection.",
"id": "GHSA-c22h-m2p9-c6w3",
"modified": "2025-01-14T15:30:54Z",
"published": "2025-01-14T15:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52967"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-24-211"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C24V-3CC2-569W
Vulnerability from github – Published: 2025-03-28 12:31 – Updated: 2026-04-01 18:34Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in videowhisper MicroPayments allows Stored XSS. This issue affects MicroPayments: from n/a through 2.9.29.
{
"affected": [],
"aliases": [
"CVE-2025-31075"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-28T10:15:16Z",
"severity": "MODERATE"
},
"details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in videowhisper MicroPayments allows Stored XSS. This issue affects MicroPayments: from n/a through 2.9.29.",
"id": "GHSA-c24v-3cc2-569w",
"modified": "2026-04-01T18:34:11Z",
"published": "2025-03-28T12:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31075"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/paid-membership/vulnerability/wordpress-micropayments-plugin-2-9-29-cross-site-scripting-xss-vulnerability?_s_id=cve"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-C29Q-5XM7-5P62
Vulnerability from github – Published: 2026-06-19 21:14 – Updated: 2026-06-19 21:14Summary
When passing an unknown service name to embedvideo, an error message is rendered containing the invalid service name. The service name is not sanitized and can contain HTML.
Details
There is a hardcoded list of allowed services in a switch statement inside EmbedServiceFactory#newFromName here. When the service name is not known, an exception is thrown with the service name injected into the message via sprintf here. This message is not sanitized and is marked as isHtml here. Similarly with {{evl: here.
PoC
// Must be on a page, not on ExpandTemplates
{{#ev:<img src=x onerror=alert(document.domain)>|dQw4w9WgXcQ}}
{{#evl:id=dummy|service=<img src=x onerror=alert(document.domain)>}}
Impact
Stored XSS that allows arbitrary Javascript/HTML insertion on any page that a user can edit. It requires no interaction and executes in the wiki origin for every visitor to the page.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.0.0"
},
"package": {
"ecosystem": "Packagist",
"name": "starcitizenwiki/embedvideo"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-55690"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-19T21:14:15Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\nWhen passing an unknown service name to embedvideo, an error message is rendered containing the invalid service name. The service name is not sanitized and can contain HTML.\n\n### Details\nThere is a hardcoded list of allowed services in a switch statement inside `EmbedServiceFactory#newFromName` [here](https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/a573a16d925ee0ea0d34b360856dc8ab0b88f822/includes/EmbedService/EmbedServiceFactory.php#L105). When the service name is not known, an exception is thrown with the service name injected into the message via sprintf [here](https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/a573a16d925ee0ea0d34b360856dc8ab0b88f822/includes/EmbedService/EmbedServiceFactory.php#L286). This message is not sanitized and is marked as isHtml [here](https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/a573a16d925ee0ea0d34b360856dc8ab0b88f822/includes/EmbedVideo.php#L303-L311). Similarly with `{{evl:` [here](https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/a573a16d925ee0ea0d34b360856dc8ab0b88f822/includes/EmbedVideo.php#L177-L183).\n\n### PoC\n```\n// Must be on a page, not on ExpandTemplates\n{{#ev:\u003cimg src=x onerror=alert(document.domain)\u003e|dQw4w9WgXcQ}}\n{{#evl:id=dummy|service=\u003cimg src=x onerror=alert(document.domain)\u003e}}\n```\n\n### Impact\nStored XSS that allows arbitrary Javascript/HTML insertion on any page that a user can edit. It requires no interaction and executes in the wiki origin for every visitor to the page.",
"id": "GHSA-c29q-5xm7-5p62",
"modified": "2026-06-19T21:14:15Z",
"published": "2026-06-19T21:14:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advisories/GHSA-c29q-5xm7-5p62"
},
{
"type": "WEB",
"url": "https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/9215564bf28a0ceb40be550a55ab78efc0accc56"
},
{
"type": "PACKAGE",
"url": "https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo"
},
{
"type": "WEB",
"url": "https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/releases/tag/v4.1.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "StarCitizenWiki Extension Embed Video: Stored XSS via unsanitized service name in exception text"
}
Mitigation
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
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
With Struts, write all data from form beans with the bean's filter attribute set to true.
Mitigation MIT-31
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.