{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74871","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-08-17T10:31:04.593Z","datePublished":"2026-08-17T11:04:40.877Z","dateUpdated":"2026-10-01T15:20:48.243Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-01T15:20:48.243Z"},"datePublic":"2026-06-29T00:00:00.000Z","title":"openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR","descriptions":[{"lang":"en","value":"openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Use of Password Hash With Insufficient Computational Effort","cweId":"CWE-916","type":"CWE"}]}],"affected":[{"vendor":"jahlives","product":"openssl_encrypt","defaultStatus":"unaffected","packageURL":"pkg:pypi/openssl_encrypt","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"1.4.6"},{"version":"1.4.6","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:*","versionEndExcluding":"1.4.6"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":6.2,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-vxf9-vwp6-2w43","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-vxf9-vwp6-2w43)"},{"name":"VulnCheck Advisory: openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-kdf-bypass-via-sequential-xor"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T17:35:23.785880Z","id":"CVE-2026-74871","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-17T17:35:33.166Z"}}]}}