Bug 2426408 (CVE-2025-14819) - CVE-2025-14819 curl: libcurl: Improper certificate validation due to cached TLS settings reuse
Summary: CVE-2025-14819 curl: libcurl: Improper certificate validation due to cached T...
Keywords:
Status: NEW
Alias: CVE-2025-14819
Deadline: 2026-01-07
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-31 04:09 UTC by OSIDB Bzimport
Modified: 2026-08-31 13:08 UTC (History)
42 users (show)

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

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:55450 0 None None None 2026-08-17 04:40:10 UTC

Description OSIDB Bzimport 2025-12-31 04:09:18 UTC 
When doing TLS related transfers with re-used easy or multi handles and
altering the `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally
reuse a CA store cached in memory for which the partial chain option was
reversed. Contrary to the user's wishes and expectations. This could make
libcurl find and accept a trust chain that it otherwise would not.
Comment 4 errata-xmlrpc 2026-08-17 04:40:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:55450 https://access.redhat.com/errata/RHSA-2026:55450
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