CVE-2026-74882

jahlives openssl_encrypt

Published 17 Aug 2026 · updated 31 Aug 2026 · Analyzed

8.7 High · CVSS 4.0, vulncheck.com

Description

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.

References

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-2592-7m3g-7fq6 · Mitigation, Vendor Advisory
www.vulncheck.com/advisories/openssl-encrypt-before-insecure-default-configuration · Third Party Advisory