Vulnerability DatabaseCVE-2026-74882
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CVE-2026-74882
Published:August 17, 2026
Updated:September 02, 2026
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 Packages
openssl-encrypt (PYTHON):
Affected version(s) >=0.2.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
Related Resources (4)
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-2592-7m3g-7fq6
https://nvd.nist.gov/vuln/detail/CVE-2026-74882
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74882.json
https://www.vulncheck.com/advisories/openssl-encrypt-before-insecure-default-configuration
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Insufficient Verification of Data Authenticity
CWE-345
EPSS
Base Score:
0.13