HIGHVulnerability
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.
Properties
- severity
- HIGH
- score
- 7.5
- epss_score
- 0.00198
- cve_id
- CVE-2026-81688
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- published_at
- 2026-08-27T17:20:58.553
- last_modified
- 2026-09-02T13:11:25.713
- epss_percentile
- 0.09658
Related Entities (4)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Missing Encryption of Sensitive Data
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
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