CVE-2026-100630 AVideo before 29.1.0 Stored XSS via HTML Entity Bypass in trailer1 Field
Attackers with upload permissions can inject malicious scripts via the trailer1 field, leading to arbitrary code execution and potential account takeover for visitors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-100630?
CVE-2026-100630 is a medium-severity cross-site scripting vulnerability in WWBN AVideo, published on 26 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-100630?
How do I fix CVE-2026-100630?
No fix has been published for CVE-2026-100630 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-100630 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100630 exists.
Sources
Also known as GHSA-hv73-qqrq-m373, GHSA-v7vx-v9q9-qhw3.