CVE-2026-33512 AVideo has an unauthenticated decrypt oracle leaking any ciphertext

High 7.5 Published Updated

Unauthenticated decrypt oracle in AVideo API allows attackers to recover plaintext from public ciphertext, leaking protected tokens and metadata.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-33512?

CVE-2026-33512 is a high-severity vulnerability in Wwbn Avideo, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.

Weakness: CWE-327, CWE-326, CWE-312, CWE-287

Which versions are affected by CVE-2026-33512?

2 open source packages ship an affected version, including wwbn/avideo. It affects 1 product.

PackageAffectedFixed in
wwbn/avideo PackagistAll versions to 26.0None
wwbn/avideo PackagistAll versions to 26.0None

Products include Wwbn Avideo.

How do I fix CVE-2026-33512?

No fix has been published for CVE-2026-33512 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-33512 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33512 exists.

All Wwbn Avideo vulnerabilities

Sources

Also known as GHSA-mwjc-5j4x-r686.

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