What is CVE-2026-74876?

CVE-2026-74876 is a critical-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.8/10. Published 2026-08-17.

How severe is CVE-2026-74876?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Jahlives OpenSSL Encrypt

CVE-2026-74876

openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jahlives Openssl_encrypt — versions 0, 1.4.0

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-74876?: CVE-2026-74876 is a critical-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.8/10. Published 2026-08-17.
How severe is CVE-2026-74876?: Critical severity. CVSS v3 base score is 9.8 out of 10.