CVE-2026-81688
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS 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
- EPSS probability
- 0.20%
- CWE
- CWE-311
- Published
- 2026-08-27
- Last modified
- 2026-08-27
Affected products
- jahlives openssl_encrypt
- jahlives openssl_encrypt
Weakness type
Related vulnerabilities
- CVE-2026-81681 — openssl_encrypt before 1.4.9 False Encryption via Cleartext Storage
- CVE-2026-77812 — Cleartext Exposure of DJI Drone Wi-Fi Credentials via BLE
- CVE-2026-19891 — TRENDnet TEW-WLC100 IKE Phase 1 Aggressive Mode racoon.conf missing encryption
- CVE-2026-20157 — Cisco RoomOS Security Hardening Release - Missing Encryption Vulnerabilities
- CVE-2026-54784 — CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality
- CVE-2026-55568 — Guzzle: Silent HTTPS-Proxy Downgrade to Cleartext
- CVE-2026-34486 — Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
- CVE-2026-34992 — Missing Encryption of Sensitive Data in antrea.io/antrea