{"apiVersion":"1.0","identifier":"CVE-2026-81688","description":"openssl_encrypt versions before 1.4.9 store an unkeyed SHA-256 hash of the plaintext in the cleartext file header metadata. Attackers can read this hash without the password to confirm guessed plaintexts offline or fingerprint identical plaintexts across separately-encrypted files.","publishedAt":"2026-08-27T17:20:58","lastModifiedAt":"2026-08-27T20:18:52","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81688","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","epssProbability":0.00198,"riskScore":0.76,"affectedProduct":"openssl-encrypt","affectedVersions":"<1.4.9","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-81688","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-81688","en":"https://www.redsauce.net/en/cves/CVE-2026-81688","fr":"https://www.redsauce.net/fr/cves/CVE-2026-81688","pt":"https://www.redsauce.net/pt/cves/CVE-2026-81688","de":"https://www.redsauce.net/de/cves/CVE-2026-81688","sk":"https://www.redsauce.net/sk/cves/CVE-2026-81688","el":"https://www.redsauce.net/el/cves/CVE-2026-81688"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-81688"}}