CVE-2026-89256CWE-79cross-site-scripting

CVE-2026-89256

High · published September 11, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
29.3
In the wild
Unconfirmed
What it is

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the Bookmark plugin where chapter names are not encoded before being concatenated into public watch-page HTML. A video owner can inject malicious scripts via the bookmark name parameter, and every visitor of that video executes the payload in the AVideo origin.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
EPSS
0.00367 · 29.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-11T16:16Z
References (3)
https://github.com/WWBN/AVideo/security/advisories/GHSA-jggq-mm5m-r5wv · [email protected]https://www.vulncheck.com/advisories/avideo-bookmark-plugin-stored-xss-via-chapter-names · [email protected]https://github.com/WWBN/AVideo/security/advisories/GHSA-jggq-mm5m-r5wv · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 13 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 11 SEP 11:15Z
    AVideo Bookmark Plugin Stored XSS via Chapter Names
    cvelistv5