CVE-2026-33716: WWBN AVideo · Improper Authentication
Affects WWBN AVideoSource CVE Database V5
Not known to be exploited · CVSS 9.4 Critical.
Data as of 5 Nov 2026, 23:24 UTC
Contested
Critical score, yet low EPSS after six months- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| WWBNAVideo | Affected
| Fixed in– |
GitHubwwbn/AVideopkg:github/wwbn/AVideoOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
To mitigate CVE-2026-33716, organizations should immediately upgrade WWBN AVideo to a version that includes the patch from commit 388fcd57dbd16f6cb3ebcdf1d08cf2b929941128 or later. If upgrading is not immediately possible, implement the following specific mitigations: 1) Restrict access to the live stream control endpoint (plugin/Live/standAloneFiles/control.json.php) via network controls such as firewall rules or VPNs to trusted users only. 2) Monitor and log all requests to the live stream control endpoint to detect anomalous or unauthorized usage patterns, especially unusual streamerURL parameters. 3) Employ web application firewalls (WAFs) with custom rules to block requests containing suspicious or external streamerURL values. 4) Conduct thorough code reviews and testing to ensure that any user-supplied URLs used for token verification are strictly validated against a whitelist of trusted domains or disabled if unnecessary. 5) Educate administrators and developers about the risks of redirecting authentication requests to user-controlled endpoints and enforce secure coding practices. 6) Regularly audit and update all dependencies and plugins to minimize exposure to known vulnerabilities. These targeted actions, combined with patching, will reduce the risk of exploitation and limit the attack surface.
Description
CVE-2026-33716 is a critical improper authentication vulnerability in WWBN AVideo versions up to 26.0. The flaw exists in the standalone live stream control endpoint, which accepts a user-controlled streamerURL parameter that redirects token verification to an attacker-controlled server. This bypasses authentication entirely, allowing unauthenticated attackers to control live streams, including stopping/starting recordings and dropping active publishers. The vulnerability has a CVSS score of 9.4, indicating high impact and ease of exploitation without any privileges or user interaction. A patch is available in commit 388fcd57dbd16f6cb3ebcdf1d08cf2b929941128. Organizations using affected versions should urgently apply the patch to prevent unauthorized live stream manipulation and potential service disruption.