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CVE-2026-74871mediumCWE-916

openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 6.9epss 0.1%
probabilidade de exploração
0.1%top 99% das CVEs
exploração observada
nãonenhuma fonte reporta
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N