CVE-2026-56346 — avideo
CVE-2026-56346 is a Missing Authentication vulnerability in wwbn/avideo. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
AVideo - Unauthenticated PGP Message Decryption via decryptMessage.json.php Endpoint
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-56346.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
Real-World Exposure
wwbn/avideoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Summary
The AVideo platform exposes a publicly accessible endpoint that performs server-side PGP decryption without requiring any form of authentication. Any anonymous user can submit a private key, ciphertext, and passphrase to the endpoint and receive the decrypted plaintext in the JSON response. This functionality is entirely unprotected, meaning no session, token, or credential is needed to invoke it.
Details
The endpoint at decryptMessage.json.php accepts a JSON body containing three user-supplied fields: a private key, an encrypted message, and a key password. The server passes these directly into a decryption routine and returns the result. There is no call to any authentication or session validation function before this operation is performed. The relevant server-side operation is:
$textDecrypted = decryptMessage($obj->textToDecrypt, $obj->privateKeyToDecryptMsg, $obj->keyPassword);
Because no access control exists, any unauthenticated request that reaches this endpoint will be processed. The primary concerns are exposure of private key material to server memory and logging infrastructure, and unconstrained consumption of server CPU resources for cryptographic operations. An attacker who has obtained a private key and matching ciphertext through other means can offload decryption work to the target server without holding any account on the platform.
PoC
curl -s -X POST \
"https://target.example.com/plugin/LoginControl/pgp/decryptMessage.json.php" \
-H "Content-Type: application/json" \
-d '{
"textToDecrypt": "-----BEGIN PGP MESSAGE-----\n<base64_ciphertext>\n-----END PGP MESSAGE-----",
"privateKeyToDecryptMsg": "-----BEGIN PGP PRIVATE KEY BLOCK-----\n<base64_private_key>\n-----END PGP PRIVATE KEY BLOCK-----",
"keyPassword": "passphrase"
}'
Impact
Private key material submitted to this endpoint is processed in server memory and may be captured in application logs, web server access logs, or error logs depending on server configuration. This can result in unintended disclosure of sensitive key material to administrators or anyone with log access. Additionally, the lack of any rate limiting combined with the absence of authentication allows any external party to submit large volumes of decryption requests, consuming server CPU resources without restriction. Any user who can reach the endpoint network-layer can trigger these effects.
Mitigation
A User::isLogged() check, or an equivalent session and authentication validation step, should be added at the top of decryptMessage.json.php before any user-supplied input is processed. Decryption operations should only be permitted for authenticated and authorized users. Server logging configuration should also be reviewed to ensure that POST body contents, including key material, are not written to persistent logs.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | wwbn/avideo | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wwbn/avideo, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of wwbn/avideo for CVE-2026-56346. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Frequently Asked Questions
Is CVE-2026-56346 in your dependencies?
Find it across Packagist, including transitive dependencies.