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.
Metrics
Affected Vendors & Products
References
History
Tue, 18 Aug 2026 15:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 11:15:00 +0000
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| 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. | |
| Title | openssl_encrypt before 1.4.0 Insecure Default Configuration | |
| Weaknesses | CWE-345 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-17T11:04:48.426Z
Updated: 2026-08-18T14:37:36.705Z
Reserved: 2026-08-17T10:36:18.506Z
Link: CVE-2026-74882
Updated: 2026-08-18T14:37:33.691Z
Status : Received
Published: 2026-08-17T11:16:42.863
Modified: 2026-08-18T15:17:10.853
Link: CVE-2026-74882
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