WWBN AVideo has incomplete fix for CVE-2026-33500 (XSS)
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 29.0 and below, an incomplete XSS fix in AVideo's `ParsedownSafeWithLinks` class overrides `inlineMarkup` for raw HTML but does not override `inlineLink()` or `inlineUrlTag()`, allowing `javascript:` URLs in markdown link syntax to bypass sanitization. Commit cae8f0dadbdd962c89b91d0095c76edb8aadcacf contains an updated fix.
Why it matters now
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 29.0 | — | No fix listed | CNA |
| — | wwbn/avideo (Packagist) | up to 29.0 | — | No fix listed | GHSA-m7r8-6q9j-m2hc |
- AVideo VendorWWBN Affected up to 29.0 Fixed in — No fix listed CNA
- wwbn/avideo (Packagist) Vendor— Affected up to 29.0 Fixed in — No fix listed GHSA-m7r8-6q9j-m2hc
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41063
- 2026-10-03 Alias added: GHSA-m7r8-6q9j-m2hc
References
Exploit 2
Patch 2
Advisory 2
More WWBN Avideo vulnerabilities
- 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
Sources
- CVE-2026-41063 · CVE Program
- CVE-2026-41063 · NVD
- FIRST EPSS
- GHSA-m7r8-6q9j-m2hc · GitHub Advisory Database · CC BY 4.0
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