Bug 2509772 - CVE-2026-8932 curl: libcurl: Security feature bypass due to improper mTLS connection reuse [fedora-all]
Summary: CVE-2026-8932 curl: libcurl: Security feature bypass due to improper mTLS con...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: curl
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Jan Macku
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["e158f066-055b-4c38-9c35-f...
Depends On:
Blocks: CVE-2026-8932
TreeView+ depends on / blocked
 
Reported: 2026-07-31 13:27 UTC by Tomas Hoger
Modified: 2026-08-17 15:44 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Tomas Hoger 2026-07-31 13:27:57 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

libcurl would reuse a previously created connection even when some mTLS config
related option had been changed that should have prohibited reuse.

libcurl keeps previously used connections in a connection pool for subsequent
transfers to reuse if one of them matches the setup. However, some TLS
settings related to client certificates were left out from the configuration
match checks, making them match too easily. In particular options related to
the private key.

Comment 1 Aoife Moloney 2026-08-17 15:44:14 UTC
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.


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