Bug 2563304 (CVE-2026-105031) - CVE-2026-105031 qpid-proton: qpid-proton: improper certificate validation via retention of default system trust anchors
Summary: CVE-2026-105031 qpid-proton: qpid-proton: improper certificate validation via...
Keywords:
Status: NEW
Alias: CVE-2026-105031
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2566138 2566139
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-29 10:31 UTC by OSIDB Bzimport
Modified: 2026-11-03 19:33 UTC (History)
11 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-29 10:31:41 UTC 
When using the OpenSSL TLS implementation, both the pn_ssl_domain_set_trusted_ca_db() & pn_tls_config_set_trusted_certs() APIs added to rather than replaced the default system trust anchors. Leading to potentially trusting unexpected peer certificates.



This can be worked around by setting the SSL_CERT_FILE environment variable for the application to /dev/null.



This issue does not affect the Win32 SChannel TLS implementation.



This issue affects Apache Qpid Proton C: through 0.40.0.



Users are recommended to upgrade to version 0.41.1, which fixes the issue.
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