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Vulnerability record · CVE-2026-88869 · published 10 September 2026

CVE-2026-88869: Cross-site scripting vulnerability

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the AD_Server plugin's log.php endpoint that fails to escape the label parameter before storage. An unauthenticated attacker can inject malicious HTML through the label parameter, which is later rendered unsanitized in the admin Ad Types report using jQuery .html(), allowing execution of arbitrary JavaScript in an administrator's browser session.

9.3 CVSS 4.0 Critical EPSS 0.53% · top 57.6% CWE-79 · Cross-site scripting Deferred
9.3CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
10 Sep 2026Last modified by NVD

Description

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the AD_Server plugin's log.php endpoint that fails to escape the label parameter before storage. An unauthenticated attacker can inject malicious HTML through the label parameter, which is later rendered unsanitized in the admin Ad Types report using jQuery .html(), allowing execution of arbitrary JavaScript in an administrator's browser session.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/WWBN/AVideo/security/advisories/GHSA-h68w-3r38-wmm8
https://www.vulncheck.com/advisories/avideo-ad-server-stored-xss-via-log-php-label-parameter
https://github.com/WWBN/AVideo/security/advisories/GHSA-h68w-3r38-wmm8

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Source: NIST National Vulnerability Database (record CVE-2026-88869), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.