CVE-2026-41056
AVideos has CORS Origin Reflection with Credentials on Sensitive API Endpoints that Enables Cross-Origin Account Takeover
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.
INFO
Published Date :
April 21, 2026, 11:16 p.m.
Last Modified :
April 23, 2026, 4:05 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update WWBN AVideo to version 29.0 or later.
- Apply the fix from commit caf705f38eae0ccfac4c3af1587781355d24495e.
- Review CORS configuration for sensitive endpoints.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41056.
| URL | Resource |
|---|---|
| https://github.com/WWBN/AVideo/commit/caf705f38eae0ccfac4c3af1587781355d24495e | Patch |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq | Exploit Mitigation Vendor Advisory |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41056 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41056
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41056 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41056 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* versions up to (including) 29.0 Added Reference Type GitHub, Inc.: https://github.com/WWBN/AVideo/commit/caf705f38eae0ccfac4c3af1587781355d24495e Types: Patch Added Reference Type CISA-ADP: https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 22, 2026
Action Type Old Value New Value Added Reference https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq -
New CVE Received by [email protected]
Apr. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-942 Added Reference https://github.com/WWBN/AVideo/commit/caf705f38eae0ccfac4c3af1587781355d24495e Added Reference https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq