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

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History

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
References

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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

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses

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