WWBN AVideo is an open source video platform. In versions up to and including 26.0, AVideo's `_session_start()` function accepts arbitrary session IDs via the `PHPSESSID` GET parameter and sets them as the active PHP session. A session regeneration bypass exists for specific blacklisted endpoints when the request originates from the same domain. Combined with the explicitly disabled session regeneration in `User::login()`, this allows a classic session fixation attack where an attacker can fix a victim's session ID before authentication and then hijack the authenticated session. Commit 5647a94d79bf69a972a86653fe02144079948785 contains a patch.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-x3pr-vrhq-vq43 AVideo has Session Fixation via GET PHPSESSID Parameter With Disabled Login Session Regeneration
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 23 Mar 2026 15:45:00 +0000

Type Values Removed Values Added
Description WWBN AVideo is an open source video platform. In versions up to and including 26.0, AVideo's `_session_start()` function accepts arbitrary session IDs via the `PHPSESSID` GET parameter and sets them as the active PHP session. A session regeneration bypass exists for specific blacklisted endpoints when the request originates from the same domain. Combined with the explicitly disabled session regeneration in `User::login()`, this allows a classic session fixation attack where an attacker can fix a victim's session ID before authentication and then hijack the authenticated session. Commit 5647a94d79bf69a972a86653fe02144079948785 contains a patch.
Title AVideo has Session Fixation via GET PHPSESSID Parameter With Disabled Login Session Regeneration
Weaknesses CWE-384
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-23T15:40:38.783Z

Reserved: 2026-03-20T16:16:48.971Z

Link: CVE-2026-33492

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-23T16:16:49.257

Modified: 2026-03-23T16:16:49.257

Link: CVE-2026-33492

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses