Socket Firewall (socketdev/socket-registry-firewall) in registry mode before 2.0.0 does not verify upstream TLS certificates by default. When the api_ssl_verify and upstream_ssl_verify configuration keys are omitted from socket.yml, the generated configuration sets SOCKET_API_SSL_VERIFY='false' and UPSTREAM_SSL_VERIFY='false', and the OpenResty/Lua HTTP client used for outbound requests accepts any certificate, including self-signed and otherwise untrusted certificates, without validating the chain. An attacker positioned to intercept traffic between Socket Firewall and the Socket API or an upstream package registry can present a crafted certificate and modify responses in transit, including substituting malicious package content or altering the allow/block decisions the firewall enforces. Setting api_ssl_verify: true and upstream_ssl_verify: true enables verification; however, in versions before 1.1.334, the generated nginx configuration did not emit lua_ssl_trusted_certificate, and thus verification could not be used successfully without manually patching the generated configuration. Version 2.0.0 changes the default for both settings to true.
History

Tue, 15 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Title Registry Mode Socket Firewall Fails to Verify TLS Certificates, Allowing Man-in-the-Middle

Tue, 15 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Title TLS Certificate Verification Bypass in Socket Firewall Registry Mode

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Title TLS Certificate Verification Bypass in Socket Firewall Registry Mode
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 14 Sep 2026 06:00:00 +0000

Type Values Removed Values Added
Title Default TLS Certificate Verification Disabled in Socket Firewall Registry Mode

Sun, 13 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
Title Default TLS Certificate Verification Disabled in Socket Firewall Registry Mode

Sun, 13 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Socketdev
Socketdev firewall
Vendors & Products Socketdev
Socketdev firewall

Sun, 13 Sep 2026 00:00:00 +0000

Type Values Removed Values Added
Description Socket Firewall (socketdev/socket-registry-firewall) in registry mode before 2.0.0 does not verify upstream TLS certificates by default. When the api_ssl_verify and upstream_ssl_verify configuration keys are omitted from socket.yml, the generated configuration sets SOCKET_API_SSL_VERIFY='false' and UPSTREAM_SSL_VERIFY='false', and the OpenResty/Lua HTTP client used for outbound requests accepts any certificate, including self-signed and otherwise untrusted certificates, without validating the chain. An attacker positioned to intercept traffic between Socket Firewall and the Socket API or an upstream package registry can present a crafted certificate and modify responses in transit, including substituting malicious package content or altering the allow/block decisions the firewall enforces. Setting api_ssl_verify: true and upstream_ssl_verify: true enables verification; however, in versions before 1.1.334, the generated nginx configuration did not emit lua_ssl_trusted_certificate, and thus verification could not be used successfully without manually patching the generated configuration. Version 2.0.0 changes the default for both settings to true.
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-09-12T23:55:41.065Z

Updated: 2026-09-14T18:15:58.290Z

Reserved: 2026-09-12T23:55:40.704Z

Link: CVE-2026-90651

cve-icon Vulnrichment

Updated: 2026-09-14T14:56:55.452Z

cve-icon NVD

Status : Deferred

Published: 2026-09-13T00:17:07.203

Modified: 2026-09-22T20:00:03.713

Link: CVE-2026-90651

cve-icon Redhat

No data.