CVE-2026-74882

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-08-17 11:16

Updated : 2026-08-31 15:49

NVD link : CVE-2026-74882

Mitre link : CVE-2026-74882

CVE.ORG link : CVE-2026-74882

JSON object : View

Products Affected

jahlives

openssl_encrypt

CWE

CWE-345

Insufficient Verification of Data Authenticity

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