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.

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Fixes

Solution

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Workaround

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History

Fri, 03 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Curl
Curl curl
Vendors & Products Curl
Curl curl

Fri, 03 Jul 2026 10:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285
CWE-287

Fri, 03 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
Description 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.
Title incomplete mTLS config matching in conn reuse
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cve-icon MITRE

Status: PUBLISHED

Assigner: curl

Published:

Updated: 2026-07-03T06:16:30.485Z

Reserved: 2026-05-19T08:56:58.825Z

Link: CVE-2026-8932

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-03T10:45:11Z

Weaknesses