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CVE-2026-81688

openssl_encrypt before 1.4.9 Plaintext Confirmation Oracle via SHA-256 PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
jahlives / openssl_encryptaffected 0 before 1.4.9; unaffected 1.4.9

CWE

CWE-311

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.