{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "768df5cd1910e349509f07a27eeac6951e0003bf"
            }
          ],
          "repo": "https://github.com/jahlives/openssl_encrypt",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w4j7-wfgw-r52w"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74901.json"
  },
  "details": "openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption failures trigger fallback to unauthenticated AES-CTR mode. Attackers can modify ciphertext in transit to bypass integrity verification and perform bit-flipping attacks without detection.",
  "id": "CVE-2026-74901",
  "modified": "2026-08-19T03:31:23.389794777Z",
  "published": "2026-08-17T11:04:59.916Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74901.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w4j7-wfgw-r52w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74901"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/openssl-encrypt-before-authentication-bypass-via-aes-ctr-fallback"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "openssl_encrypt before 1.4.0 Authentication Bypass via AES-CTR Fallback"
}