CVE-2026-41056HIGH 8.1EPSS p25.1%
CVE-2026-41056CVE-2026-41056
Description
WWBN AVideo is an open source video platform. In versions 29.0 and below, the `allowOrigin($allowAll=true)` function in `objects/functions.php` reflects any arbitrary `Origin` header back in `Access-Control-Allow-Origin` along with `Access-Control-Allow-Credentials: true`. This function is called by both `plugin/API/get.json.php` and `plugin/API/set.json.php` — the primary API endpoints that handle user data retrieval, authentication, livestream credentials, and state-changing operations. Combined with the application's `SameSite=None` session cookie policy, any website can make credentialed cross-origin requests and read authenticated API responses, enabling theft of user PII, livestream keys, and performing state changes on behalf of the victim. Commit caf705f38eae0ccfac4c3af1587781355d24495e contains a fix.
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| EPSS | 0.34% probability of exploitation · percentile 25.1% · 2026-06-18T12:00:27Z |
| Published | 2026-04-21 |
| Last modified | 2026-04-23 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Permissive Cross-domain Security Policy with Untrusted Domainscwe-942 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.