CVE Catalog

CVE-2026-116139

MediumCVSS 5.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.23%

13th percentile - higher than 13% of all known CVEs

Summary

WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.

Risk Assessment

A malicious comment can execute JavaScript in other users' browsers, enabling session theft or actions performed on their behalf.

Recommendation

Update AVideo to a version later than 29.3.0 if available. Until then, restrict commenting to trusted users.

Other vulnerabilities in WWBN AVideo

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Original NVD description (English source)

WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS