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GHSA-mwjc-5j4x-r686

HighCVSS 7.5 / 10
Published Mar 20, 2026·Last modified Mar 25, 2026
Affected Components(0)

No affected components available

Description

Summary

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. Severity: High.

Details

  • Entry: plugin/API/get.json.php is unauthenticated.
  • Handler: plugin/API/API.php get_api_decryptString() (lines ~5945–5966): 
    $string = decryptString($_REQUEST['string']);
return new ApiObject($string, empty($string));
    No APISecret or user check occurs before decrypting.
  • Public ciphertext source: view/url2Embed.json.php returns playLink/playEmbedLink (encryptString(json_encode(...))) to any caller.

PoC

  1. Obtain ciphertext: 
    GET /view/url2Embed.json.php?url=https://example.com/video.mp4
    Copy playLink.
  2. Decrypt without auth: 
    POST /plugin/API/get.json.php?APIName=decryptString
Content-Type: application/x-www-form-urlencoded

string=<playLink ciphertext>
    Response contains the plaintext JSON (videoLink, title, users_id, etc.).

Impact

  • Any encrypted payload produced by the platform can be decrypted by anyone.
  • Leaks tokens/links intended to be confidential; enables replay and tampering where secrecy was assumed.

Mitigation

  • Require API secret or authenticated/authorized user for decryptString, or remove the endpoint.
  • Prefer one-way signatures (HMAC) instead of exposing generic decryption.
  • Rotate encryption keys/salts after patch to invalidate exposed ciphertexts.
Risk Scores
Base Score
7.5

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.

Threat Intelligence
6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.23%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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