TI-2026-80157 Aliases CVE-2026-116139 GHSA-r52j-79hv-6mmf

WWBN AVideo Stored XSS via Comment Markdown Rendering

LOW 23CWE-79Published 2026-10-25 · Updated 2026-10-26

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: Low · Low · None
Fix status: No fix listed

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

Summary

WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability (CWE-79) in comment rendering. markDownToHTML() preserves event-handler attributes in leading HTML blocks, so a comment that starts with an img tag carrying an onerror handler bypasses the inline sanitizer. An authenticated commenter can run JavaScript in viewers' browsers under the application origin.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00226 13th 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: None
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	26.0 – 29.3.0	—	No fix listed	CNA

AVideo VendorWWBN Affected 26.0 – 29.3.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:wwbn:avideo::::::::	—	—	WWBN

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* Versions — — ·WWBN

Remediation

No fixed version is listed for WWBN AVideo 26.0 through 29.3.0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-25 Threatist record created from CVE-2026-116139
2026-10-26 CISA SSVC decision points changed
2026-10-27 Alias added: GHSA-r52j-79hv-6mmf

References

Patch 1

Patch Commit

Advisory 1

GitHub Security Advisory (GHSA-cx46-26xc-2w7f)

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