TI-2026-42822 Aliases CVE-2026-60092 GHSA-4f8v-jp98-cpv3

AVideo - Stored Cross-Site Scripting via Unescaped User-Agent in Participants Panel

MEDIUM 56CWE-79Published 2026-07-08 · Updated 2026-10-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

AVideo (Meet plugin) through commit e8d6119f3cb1b849149906efeb0a41fc024f59f8 contains a stored cross-site scripting vulnerability in the Meet plugin's getMeetInfo.json.php endpoint. When a participant joins a public meeting, the raw HTTP User-Agent header is stored (meet_join_log.user_agent) without sanitization (bypassing AVideo's setter-level xss_esc() layer) and later echoed without output encoding (no htmlspecialchars()) in the Participants management panel, which is accessible to the meeting host and site administrators. An anonymous, unauthenticated attacker can join any public meeting while supplying a User-Agent header containing an HTML/JavaScript payload; the payload is persisted and executes in the privileged, authenticated browser session of the meeting host or a site administrator when they open the participant list. The issue was unpatched at the time of the report.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00253 16th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
WWBN	AVideo	—	—	No fix listed	CNA

AVideo VendorWWBN Affected — Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-60092
2026-10-03 Alias added: GHSA-4f8v-jp98-cpv3

References

Patch 1

https://github.com/WWBN/AVideo/commit/e8d6119f3cb1b849149906efeb0a41fc024f59f8

Advisory 1

GitHub Security Advisory (GHSA-7cqp-7cfv-6c3q)

TI-2026-82233 OS command injection in AVideo-Encoder via forged streamer login CVSS 3.1CRITICAL 10.0
TI-2026-82232 Unauthenticated PHP code injection in AVideo-Encoder installer CVSS 3.1CRITICAL 10.0
TI-2026-29567 Code injection in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-26095 AVideo Allows Unauthenticated Live Stream Control via Token Verification URL Override in control.json.php CVSS 3.1CRITICAL 9.4
TI-2026-25874 Improper access control in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-25758 AVideo has an Unauthenticated SQL Injection via `doNotShowCats` Parameter (Backslash Escape Bypass) CVSS 3.1CRITICAL 9.8

See all 364 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences