CVE-2026-33649
published 2026-03-23CVE-2026-33649: WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `plugin/Permissions/setPermission.json.php` endpoint accepts GET…
PriorityP355high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.17%
6.9th percentile
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `plugin/Permissions/setPermission.json.php` endpoint accepts GET parameters for a state-changing operation that modifies user group permissions. The endpoint has no CSRF token validation, and the application explicitly sets `session.cookie_samesite=None` on session cookies. This allows an unauthenticated attacker to craft a page with `` tags that, when visited by an admin, silently grant arbitrary permissions to the attacker's user group — escalating the attacker to near-admin access. As of time of publication, no known patched versions are available.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| wwbn | avideo | <= 26.0 | — |
| wwbn | avideo | 0 – 26.0 | — |
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GHSA
AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
ghsa·2026-03-25
CVE-2026-33649 [HIGH] CWE-352 AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
## Summary
The `plugin/Permissions/setPermission.json.php` endpoint accepts GET parameters for a state-changing operation that modifies user group permissions. The endpoint has no CSRF token validation, and the application explicitly sets `session.cookie_samesite=None` on session cookies. This allows an unauthenticated attacker to craft a page with `` tags that, when visited by an admin, silently grant arbitrary permissions to the attacker's user group — escalating the attacker to near-admin access.
## Details
The root cause is a combination of three issues:
**1. `$_REQUEST` used instead of `$_POST` (accepts GET parameters):**
`plugin/Permissions/setPermission.json.php
OSV
AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
osv·2026-03-25
CVE-2026-33649 [HIGH] AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
AVideo's GET-Based CSRF in setPermission.json.php Enables Privilege Escalation via Arbitrary Permission Modification
## Summary
The `plugin/Permissions/setPermission.json.php` endpoint accepts GET parameters for a state-changing operation that modifies user group permissions. The endpoint has no CSRF token validation, and the application explicitly sets `session.cookie_samesite=None` on session cookies. This allows an unauthenticated attacker to craft a page with `` tags that, when visited by an admin, silently grant arbitrary permissions to the attacker's user group — escalating the attacker to near-admin access.
## Details
The root cause is a combination of three issues:
**1. `$_REQUEST` used instead of `$_POST` (accepts GET parameters):**
`plugin/Permissions/setPermission.json.php
No detection rules found.
No public exploits indexed.
2026-03-23
Published