AVideo has an unauthenticated decrypt oracle leaking any ciphertext

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.

Problem type

Affected products

WWBN

AVideo

<= 26.0 - AFFECTED

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686

https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686

x_refsource_CONFIRM

https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13

https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13

x_refsource_MISC

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-33512

Click to expand

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-33512",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-03-23T18:17:47.070Z",
    "dateReserved": "2026-03-20T16:59:08.890Z",
    "datePublished": "2026-03-23T18:17:47.070Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2026-03-23T18:17:47.070Z"
      },
      "title": "AVideo has an unauthenticated decrypt oracle leaking any ciphertext",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "affected": [
        {
          "vendor": "WWBN",
          "product": "AVideo",
          "versions": [
            {
              "version": "<= 26.0",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-287: Improper Authentication",
              "cweId": "CWE-287",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-312: Cleartext Storage of Sensitive Information",
              "cweId": "CWE-312",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-326: Inadequate Encryption Strength",
              "cweId": "CWE-326",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-327: Use of a Broken or Risky Cryptographic Algorithm",
              "cweId": "CWE-327",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686",
          "name": "https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        },
        {
          "url": "https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13",
          "name": "https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13",
          "tags": [
            "x_refsource_MISC"
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH"
          }
        }
      ]
    }
  }
}