ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-33500

WWBN AVideo is an open source video platform.

Published Mar 23, 2026 · catalog updated Jun 17, 2026 · WWBN AVideo is an

Check if you run it

No confirmed exploitation is on record for CVE-2026-33500. EPSS is 0.26%. Act only if a listed version of WWBN AVideo is an is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (WWBN AVideo is an).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Version ranges on file
Affected products
cpe wwbn/avideo · stated avideo

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML tags). With disabled, Parsedown's built-in URI filtering ( / ) is also inactive. An attacker can inject stored XSS via comment markdown links. Commit 3ae02fa240939dbefc5949d64f05790fd25d728d contains a patch.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe wwbn/avideoversion unspecified
  • stated avideo<= 26.0

How to fix CVE-2026-33500

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-33500. EPSS is 0.26%. Act only if a listed version of WWBN AVideo is an is installed.

Which versions are affected?

Compare what you have installed with <= 26.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 23, 2026 · NIST NVD

    Detected

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML

  2. Jun 17, 2026 · NIST NVD

    Updated

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's . This creates a bypass: markdown link syntax is processed by Parsedown's method, which does not go through the custom sanitization (that only handles raw HTML

Sources

  • CVE.orgVulnerability recordCVE-2026-33500

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33500

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33500

    WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.