TI-2026-26682 Aliases CVE-2026-34396 GHSA-v4h7-3x43-qqw4

AVideo: Stored XSS via Unescaped Plugin Configuration Values in Admin Panel

MEDIUM 60CWE-79Published 2026-03-31 · Updated 2026-04-01

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo admin panel renders plugin configuration values in HTML forms without applying htmlspecialchars() or any other output encoding. The jsonToFormElements() function in admin/functions.php directly interpolates user-controlled values into textarea contents, option elements, and input attributes. An attacker who can set a plugin configuration value (either as a compromised admin or by chaining with CSRF on admin/save.json.php) can inject arbitrary JavaScript that executes whenever any administrator visits the plugin configuration page. At time of publication, there are no publicly available patches.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00226 13th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

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	up to 26.0	—	No fix listed	CNA
—	wwbn/avideo (Packagist)	up to 26.0	—	No fix listed	GHSA-v4h7-3x43-qqw4

AVideo VendorWWBN Affected up to 26.0 Fixed in — No fix listed CNA
wwbn/avideo (Packagist) Vendor— Affected up to 26.0 Fixed in — No fix listed GHSA-v4h7-3x43-qqw4

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wwbn:avideo::::::::	up to 26.0	Vulnerable	WWBN

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* Versions up to 26.0 Vulnerable ·WWBN

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-34396
2026-10-03 Alias added: GHSA-v4h7-3x43-qqw4

References

Exploit 1

https://github.com/WWBN/AVideo/security/advisories/GHSA-v4h7-3x43-qqw4

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-34396

Other 2

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
TI-2024-20951 An issue in WWBN AVideo v.12.4 through v.14.2 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
TI-2023-10706 OS injection vulnerability in World Wide Broadcast Network AVideo version before 12.4… CVSS 3.1CRITICAL 9.8

See all 189 →

Sources

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