CVE Feed

    Dashboard / CVE / CVE-2026-74900

    CVE-2026-74900

    openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from only 16 bytes of the private key and publicly available encapsulated key data. Attackers who obtain 16 bytes of the private key can compute the shared secret and decrypt all ciphertext, as the fallback triggers on any KEM failure without raising an error.

    Published:Aug 17, 2026
    Last Modified:Sep 1, 2026
    EPS:Aug 17, 2026
    EPSS Score:0.00337
    CVSS Score:9.8

    Affected Products

    Vendor
    Jahlives
    Product
    Openssl Encrypt

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-391 Unchecked Error Condition

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-81721 (CVSS 8.7) — openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore hea…
    CVE-2026-81720 (CVSS 6.9) — openssl_encrypt before 1.4.9 fails to validate the memory_cost parameter from identity file protection blocks,…
    CVE-2026-81719 (CVSS 9.3) — openssl_encrypt before 1.4.9 executes untrusted third-party plugins with insufficient controls: the plugin sig…
    CVE-2026-81718 (CVSS 8.7) — openssl_encrypt versions before 1.4.9 use under-parameterized PBKDF2-HMAC-SHA256 with only 100,000 iterations …
    CVE-2026-81717 (CVSS 9.3) — openssl_encrypt (pip package openssl-encrypt) before 1.4.9 contains two weaknesses in the portable USB drive f…
    CVE-2026-81716 (CVSS 8.7) — openssl_encrypt (pip: openssl-encrypt) versions before 1.4.9 contain a path traversal flaw in PluginSandbox._i…
    CVE-2026-81715 (CVSS 8.7) — openssl_encrypt (pip package openssl-encrypt) versions <= 1.4.8 do not redact the keyserver bearer token passe…
    CVE-2026-81714 (CVSS 9.3) — openssl_encrypt (pip: openssl-encrypt) versions <= 1.4.8 use suffix-tolerant fingerprint matching in enroll_tr…
    CVE-2026-81707 (CVSS 9.3) — openssl_encrypt before 1.4.9 fails to sanitize the email field of imported identity documents, allowing attack…
    CVE-2026-81706 (CVSS 9.3) — openssl_encrypt before 1.4.9 fails to prevent namespace collisions between own identities and contacts in Iden…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High