{"id":"CVE-2026-74888","state":"PUBLISHED","title":"openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation","description":"openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose security properties have not been formally analyzed. Attackers can exploit this weakened key derivation to more efficiently crack passwords protecting legacy encrypted files compared to standard PBKDF2 implementations.","publishedAt":"2026-08-17T11:04:52.472Z","updatedAt":"2026-10-01T15:20:59.221Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["jahlives openssl_encrypt"],"affected":[{"vendor":"jahlives","product":"openssl_encrypt","packageURL":"pkg:pypi/openssl_encrypt","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.4.0","versionType":"semver"},{"version":"1.4.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-743f-89fg-x288","https://www.vulncheck.com/advisories/openssl-encrypt-before-non-standard-pbkdf2-key-derivation"],"weaknesses":["CWE-327"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74888.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74888","state":"PUBLISHED","datePublished":"2026-08-17T11:04:52.472Z","dateUpdated":"2026-10-01T15:20:59.221Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-17T10:42:40.455Z"},"containers":{"cna":{"title":"openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation","descriptions":[{"lang":"en","value":"openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose security properties have not been formally analyzed. Attackers can exploit this weakened key derivation to more efficiently crack passwords protecting legacy encrypted files compared to standard PBKDF2 implementations."}],"affected":[{"vendor":"jahlives","product":"openssl_encrypt","packageURL":"pkg:pypi/openssl_encrypt","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.4.0","versionType":"semver"},{"version":"1.4.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-743f-89fg-x288","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-743f-89fg-x288)"},{"url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-non-standard-pbkdf2-key-derivation","name":"VulnCheck Advisory: openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-327","lang":"en","description":"Use of a Broken or Risky Cryptographic Algorithm","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-01T15:20:59.221Z"},"datePublic":"2026-02-10T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:*","versionEndExcluding":"1.4.0"}]}]}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T12:48:14.297282Z","id":"CVE-2026-74888","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-17T12:48:36.797Z"}}]}}}