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CVE-2026-75831— Grav before 2.0.15 Stored XSS via audio/video source URL

CVSS 7.6 · High

Possible ATT&CK Techniques 1AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2026-75831

Vulnerability Information
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Vulnerability Title
Grav before 2.0.15 Stored XSS via audio/video source URL
Source: CVE Program / CVE List V5
Vulnerability Description
Grav before 2.0.15 contains a stored cross-site scripting vulnerability in the audio and video media rendering through the sourceParsedownElement method. The media URL fragment is concatenated unescaped into rawHtml source elements, allowing attackers to inject arbitrary HTML and JavaScript that executes in viewers' sessions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
getgravgrav 0 ~ 2.0.15 -

II. Public POCs for CVE-2026-75831

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 8868 chars
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III. Intelligence Information for CVE-2026-75831

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Patches & Fixes for CVE-2026-75831 (1)

Vendor Advisories for CVE-2026-75831 (2)

Same Patch Batch · getgrav · 2026-08-18 · 14 CVEs total

CVE-2026-758379.1 CRITICALGrav before 2.0.14 Privilege Escalation via Group Access Field
CVE-2026-758368.8 HIGHGrav API Plugin before 1.0.14 Missing Authorization
CVE-2026-758278.8 HIGHGrav before 2.0.15 Arbitrary File Write via error_log
CVE-2026-758288.7 HIGHGrav before 2.0.15 Stored XSS via detectXss() Quote Bypass
CVE-2026-758298.1 HIGHgrav-plugin-api before 1.0.15 Twig SSTI via translate endpoint
CVE-2026-758307.1 HIGHgrav-plugin-api before 1.0.15 Path Traversal via batchCopy
CVE-2026-749075.9 MEDIUMGrav before 2.0.15 Path Traversal via plugin-asset-map.php
CVE-2026-751075.4 MEDIUMGrav Form Plugin before 9.1.19 Stored XSS via Field Properties
CVE-2026-758345.4 MEDIUMGrav before 2.0.14 Stored XSS via Invalid UTF-8 Byte
CVE-2026-749084.6 MEDIUMGrav plugin-api before 1.0.15 Script Injection via SVG
CVE-2026-758324.3 MEDIUMGrav API Plugin before 1.0.14 Authorization Bypass
CVE-2026-758354.3 MEDIUMGrav API Plugin before 1.0.14 Missing Authorization
CVE-2026-758334.2 MEDIUMGrav API Plugin Open Redirect via Backslash Bypass

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-79

V. Comments for CVE-2026-75831

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