CVE-2026-74882: Jahlives OpenSSL Encrypt

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

openssl_encrypt versions before 1.4.0 contain an insecure default configuration that trusts the entire RFC 1918 private address space in IntegrityProxyConfig trusted_proxies. Attackers on private networks can forge client certificate headers to bypass mTLS authentication when ProxyAuth validation is relaxed or modified.

Affected products

• Jahlives OpenSSL Encrypt: before 1.4.0 (fixed in 1.4.0)

Published 2026-08-17. Last modified 2026-08-31.