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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-74871

openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

jahlives openssl_encrypt

Default version status: unaffected

  • 0 to < 1.4.6affected
  • 1.4.6unaffected
pkg:pypi/openssl_encrypt

References