What’s Vulnerable › Vulnerabilities

CVE-2026-100630: AVideo before 29.1.0 Stored XSS via HTML Entity Bypass in trailer1 Field

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-26 · updated 2026-10-04
• Weakness: CWE-79

Description

AVideo before 29.1.0 contains a stored cross-site scripting vulnerability in the video trailer1 field rendered unsanitized within an inline onclick JavaScript string. Attackers with video upload permission can store HTML entity-encoded payloads that bypass isValidURL() validation and are decoded by the browser to break out of the JavaScript string, executing arbitrary code in any visitor's session including administrators.

Affected products

• WWBN AVideo: before 29.1.0 — fixed in 29.1.0

How to fix

Upgrade to a fixed version: WWBN AVideo 29.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/WWBN/AVideo/commit/40b3267760924389c626a549bb1c6fd013b3b29c
• https://github.com/WWBN/AVideo/security/advisories/GHSA-v7vx-v9q9-qhw3
• https://www.vulncheck.com/advisories/avideo-stored-xss-via-html-entity-bypass-in-trailer1-field
• https://github.com/WWBN/AVideo/security/advisories/GHSA-v7vx-v9q9-qhw3

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