CVE-2026-89255: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in WWBN AVideo
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to HTML-encode PGP public keys echoed into a textarea element. An authenticated attacker can inject malicious JavaScript by submitting a crafted public key, which executes in an administrator's session when viewing the user's profile tab.
AI Analysis
Technical Summary
The vulnerability in WWBN AVideo (commit c3edcc274c389816d434acadac07ee78eaf330c1) involves improper neutralization of input during web page generation. Specifically, the LoginControl plugin fails to HTML-encode PGP public keys echoed into a textarea element, enabling stored cross-site scripting. An authenticated attacker can submit a crafted public key containing malicious JavaScript, which executes in an administrator's browser when they view the user's profile tab.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary JavaScript in the context of an administrator's session. This can lead to session hijacking, privilege escalation, or other malicious actions within the administrative interface of AVideo.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the LoginControl plugin and avoid viewing user profiles with untrusted PGP keys. Monitor vendor channels for official patches or updates.
CVE-2026-89255: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in WWBN AVideo
Description
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to HTML-encode PGP public keys echoed into a textarea element. An authenticated attacker can inject malicious JavaScript by submitting a crafted public key, which executes in an administrator's session when viewing the user's profile tab.
CVSS v4.0
Score 9.3critical
Affected software
WWBN
AVideo
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in WWBN AVideo (commit c3edcc274c389816d434acadac07ee78eaf330c1) involves improper neutralization of input during web page generation. Specifically, the LoginControl plugin fails to HTML-encode PGP public keys echoed into a textarea element, enabling stored cross-site scripting. An authenticated attacker can submit a crafted public key containing malicious JavaScript, which executes in an administrator's browser when they view the user's profile tab.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary JavaScript in the context of an administrator's session. This can lead to session hijacking, privilege escalation, or other malicious actions within the administrative interface of AVideo.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the LoginControl plugin and avoid viewing user profiles with untrusted PGP keys. Monitor vendor channels for official patches or updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-11T10:51:59.215Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa3e6e091cc7f38481866c4
Added to database: 09/11/2026, 11:32:48 UTC
Last enriched: 09/11/2026, 11:47:09 UTC
Last updated: 09/11/2026, 16:04:16 UTC
Views: 9
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