CVE-2026-74882CWE-345

CVE-2026-74882

High · published August 17, 2026

CVSS v3.1

7.5

EPSS

Percentile

5.6

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 7.5 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0: 8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS: 0.00167 · 5.6th percentile
Weakness: CWE-345 · Insufficient Verification of Data Authenticity
Published: 2026-08-17T15:16Z

Affected products (1)

Product	Versions	Fixed in
jahlives/openssl_encrypt	< 1.4.0	1.4.0

References (2)

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-2592-7m3g-7fq6 · [email protected]https://www.vulncheck.com/advisories/openssl-encrypt-before-insecure-default-configuration · [email protected]

EPSS history

Timeline

17 AUG 11:04Z
openssl_encrypt before 1.4.0 Insecure Default Configuration
cvelistv5