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    CVE-2026-81721

    openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication.

    Published:Aug 27, 2026
    Last Modified:Sep 2, 2026
    EPS:Aug 27, 2026
    EPSS Score:0.00393
    CVSS Score:7.5

    Affected Products

    Vendor
    Jahlives
    Product
    Openssl Encrypt

    Exploits

    No exploit reference

    Related CVEs

    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…
    CVE-2026-81705 (CVSS 8.7) — openssl-encrypt before 1.4.9 fails to redact the file password in its --debug argv dump when the password is s…

    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