CVE-2026-75831

Summary

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.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/getgrav/grav/security/advisories/GHSA-6qw9-4vv5-jr97

References

• https://github.com/getgrav/grav/security/advisories/GHSA-6qw9-4vv5-jr97
• https://github.com/getgrav/grav/commit/aba291a59cab29ddce491175791888d8d0b65e20
• https://www.vulncheck.com/advisories/grav-before-stored-xss-via-audio-video-source-url

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