CVE-2026-33683

Summary

WWBN AVideo is an open source video platform. In versions up to and including 26.0, a sanitization order-of-operations flaw in the user profile "about" field allows any registered user to inject arbitrary JavaScript that executes when other users visit their channel page. The xss_esc() function entity-encodes input before strip_specific_tags() can match dangerous HTML tags, and html_entity_decode() on output reverses the encoding, restoring the raw malicious HTML. Commit 7cfdc380dae1e56bbb5de581470d9e9957445df0 contains a patch.

Affected Software

Weaknesses

• CWE-79: 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

References

• https://github.com/WWBN/AVideo/security/advisories/GHSA-ghx5-7jjg-q2j7
• https://github.com/WWBN/AVideo/commit/7cfdc380dae1e56bbb5de581470d9e9957445df0

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