CVE-2026-33043 json
AVideo affected by Session Hijacking via Unauthenticated Session ID Disclosure with Permissive CORS
published 7mo ago modified 4mo ago also GHSA-qc3p-398r-p59j , EUVD-2026-13585
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
WWBN AVideo is an open source video platform. In versions 25.0 and below, /objects/phpsessionid.json.php exposes the current PHP session ID to any unauthenticated request. The allowOrigin() function reflects any Origin header back in Access-Control-Allow-Origin with Access-Control-Allow-Credentials: true, enabling cross-origin session theft and full account takeover. This issue has been fixed in version 26.0.
Patch / fix
Is CVE-2026-33043 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/WWBN/AVideo/security/advisories/GHSA-qc3p-398r-p59j referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | wwbn/avideo | <=25.0 |
no fix listed |
Affected products
- WWBN AVideo
Classification
- Weakness
-
- CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains
References
-
github.com
/WWBN/AVideo/commit/9f4f51e5df5e3343400f9d0068705f5482b6f930
web, patch
-
github.com
/WWBN/AVideo/security/advisories/GHSA-qc3p-398r-p59j
web, exploit, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33043
advisory
-
github.com
/WWBN/AVideo
package
Sources
- CVE List CVE-2026-33043
- GitHub Advisory GHSA-qc3p-398r-p59j
- NVD CVE-2026-33043
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