Bug 2496759 (CVE-2026-8932) - CVE-2026-8932 libcurl: libcurl: Security feature bypass due to improper mTLS connection reuse
Summary: CVE-2026-8932 libcurl: libcurl: Security feature bypass due to improper mTLS ...
Keywords:
Status: NEW
Alias: CVE-2026-8932
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2497470 2553437 2553439 2553442 2553443 2553444 2509772 2553438 2553440 2553441
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-03 07:01 UTC by OSIDB Bzimport
Modified: 2026-11-06 18:09 UTC (History)
39 users (show)

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

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:93401 0 None None None 2026-11-01 16:28:28 UTC
Red Hat Product Errata RHBA-2026:93478 0 None None None 2026-11-02 02:33:44 UTC
Red Hat Product Errata RHBA-2026:93788 0 None None None 2026-11-02 15:55:26 UTC
Red Hat Product Errata RHBA-2026:94526 0 None None None 2026-11-03 13:40:33 UTC
Red Hat Product Errata RHSA-2026:56869 0 None None None 2026-08-19 13:28:44 UTC
Red Hat Product Errata RHSA-2026:69125 0 None None None 2026-09-21 06:14:36 UTC
Red Hat Product Errata RHSA-2026:72506 0 None None None 2026-09-28 14:23:41 UTC
Red Hat Product Errata RHSA-2026:92368 0 None None None 2026-10-29 13:02:05 UTC
Red Hat Product Errata RHSA-2026:92907 0 None None None 2026-10-30 00:57:31 UTC
Red Hat Product Errata RHSA-2026:93454 0 None None None 2026-11-02 05:04:57 UTC
Red Hat Product Errata RHSA-2026:95346 0 None None None 2026-11-06 18:09:01 UTC

Description OSIDB Bzimport 2026-07-03 07:01:37 UTC 
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 4 errata-xmlrpc 2026-08-19 13:28:42 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Core Services 2.4.62.SP5

Via RHSA-2026:56869 https://access.redhat.com/errata/RHSA-2026:56869
Comment 7 Jon Orris 2026-09-21 06:14:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:69125 https://access.redhat.com/errata/RHSA-2026:69125
Comment 8 Jon Orris 2026-09-28 14:23:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:72506 https://access.redhat.com/errata/RHSA-2026:72506
Comment 9 Jon Orris 2026-10-29 13:02:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:92368 https://access.redhat.com/errata/RHSA-2026:92368
Comment 10 Jon Orris 2026-10-30 00:57:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:92907 https://access.redhat.com/errata/RHSA-2026:92907
Comment 11 Jon Orris 2026-11-02 05:04:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:93454 https://access.redhat.com/errata/RHSA-2026:93454
Comment 12 Jon Orris 2026-11-06 18:08:59 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.22

Via RHSA-2026:95346 https://access.redhat.com/errata/RHSA-2026:95346
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