AIKIDO-2026-997995
SIPSorcery is vulnerable to Improper Certificate Validation
74
High Risk
This Affects:
SIPSorceryTL;DR
The SIP transport channel for TLS initializes with its certificate-validation bypass flag enabled, so remote server certificates are not validated by default. When an application creates a TLS SIP channel without supplying a custom validation callback, the built-in validator logs a warning and then accepts any certificate. This lets a network position holder intercept and decrypt SIP signaling, capture digest authentication credentials, and tamper with call setup while the library reports a successful secure connection. The fix disables BypassCertificateValidation by default so certificate validation is enforced unless the consumer explicitly opts out.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use SIP over TLS without supplying a custom certificate validation callback.
Background info
SIPSorcery is vulnerable to Improper Certificate Validation in versions 0.0.1 - 10.0.15.
How to fix this
Upgrade the SIPSorcery library to the patch version.
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SOC 2Compliant
ISO 27001Compliant