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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
curl curl unaffected
Version Status Constraints
8.20.0 affected ≤ 8.20.0
8.19.0 affected ≤ 8.19.0
8.18.0 affected ≤ 8.18.0
8.17.0 affected ≤ 8.17.0
8.16.0 affected ≤ 8.16.0
8.15.0 affected ≤ 8.15.0
8.14.1 affected ≤ 8.14.1
8.14.0 affected ≤ 8.14.0
8.13.0 affected ≤ 8.13.0
8.12.1 affected ≤ 8.12.1
8.12.0 affected ≤ 8.12.0
8.11.1 affected ≤ 8.11.1
8.11.0 affected ≤ 8.11.0
8.10.1 affected ≤ 8.10.1
8.10.0 affected ≤ 8.10.0
8.9.1 affected ≤ 8.9.1
8.9.0 affected ≤ 8.9.0
8.8.0 affected ≤ 8.8.0
8.7.1 affected ≤ 8.7.1
8.7.0 affected ≤ 8.7.0
8.6.0 affected ≤ 8.6.0
8.5.0 affected ≤ 8.5.0
8.4.0 affected ≤ 8.4.0
8.3.0 affected ≤ 8.3.0
8.2.1 affected ≤ 8.2.1
8.2.0 affected ≤ 8.2.0
8.1.2 affected ≤ 8.1.2
8.1.1 affected ≤ 8.1.1
8.1.0 affected ≤ 8.1.0
8.0.1 affected ≤ 8.0.1
8.0.0 affected ≤ 8.0.0
7.88.1 affected ≤ 7.88.1
7.88.0 affected ≤ 7.88.0
7.87.0 affected ≤ 7.87.0
7.86.0 affected ≤ 7.86.0
7.85.0 affected ≤ 7.85.0
7.84.0 affected ≤ 7.84.0
7.83.1 affected ≤ 7.83.1
7.83.0 affected ≤ 7.83.0
7.82.0 affected ≤ 7.82.0
7.81.0 affected ≤ 7.81.0
7.80.0 affected ≤ 7.80.0
7.79.1 affected ≤ 7.79.1
7.79.0 affected ≤ 7.79.0
7.78.0 affected ≤ 7.78.0
7.77.0 affected ≤ 7.77.0
7.76.1 affected ≤ 7.76.1
7.76.0 affected ≤ 7.76.0
7.75.0 affected ≤ 7.75.0
7.74.0 affected ≤ 7.74.0
7.73.0 affected ≤ 7.73.0
7.72.0 affected ≤ 7.72.0
7.71.1 affected ≤ 7.71.1
7.71.0 affected ≤ 7.71.0
7.70.0 affected ≤ 7.70.0
7.69.1 affected ≤ 7.69.1
7.69.0 affected ≤ 7.69.0
7.68.0 affected ≤ 7.68.0
7.67.0 affected ≤ 7.67.0
7.66.0 affected ≤ 7.66.0
7.65.3 affected ≤ 7.65.3
7.65.2 affected ≤ 7.65.2
7.65.1 affected ≤ 7.65.1
7.65.0 affected ≤ 7.65.0
7.64.1 affected ≤ 7.64.1
7.64.0 affected ≤ 7.64.0
7.63.0 affected ≤ 7.63.0
7.62.0 affected ≤ 7.62.0
7.61.1 affected ≤ 7.61.1
7.61.0 affected ≤ 7.61.0
7.60.0 affected ≤ 7.60.0
7.59.0 affected ≤ 7.59.0
7.58.0 affected ≤ 7.58.0
7.57.0 affected ≤ 7.57.0
7.56.1 affected ≤ 7.56.1
7.56.0 affected ≤ 7.56.0
7.55.1 affected ≤ 7.55.1
7.55.0 affected ≤ 7.55.0
7.54.1 affected ≤ 7.54.1
7.54.0 affected ≤ 7.54.0
7.53.1 affected ≤ 7.53.1
7.53.0 affected ≤ 7.53.0
7.52.1 affected ≤ 7.52.1
7.52.0 affected ≤ 7.52.0
7.51.0 affected ≤ 7.51.0
7.50.3 affected ≤ 7.50.3
7.50.2 affected ≤ 7.50.2
7.50.1 affected ≤ 7.50.1
7.50.0 affected ≤ 7.50.0
7.49.1 affected ≤ 7.49.1
7.49.0 affected ≤ 7.49.0
7.48.0 affected ≤ 7.48.0
7.47.1 affected ≤ 7.47.1
7.47.0 affected ≤ 7.47.0
7.46.0 affected ≤ 7.46.0
7.45.0 affected ≤ 7.45.0
7.44.0 affected ≤ 7.44.0
7.43.0 affected ≤ 7.43.0
7.42.1 affected ≤ 7.42.1
7.42.0 affected ≤ 7.42.0
7.41.0 affected ≤ 7.41.0
7.40.0 affected ≤ 7.40.0
7.39.0 affected ≤ 7.39.0
7.38.0 affected ≤ 7.38.0
7.37.1 affected ≤ 7.37.1
7.37.0 affected ≤ 7.37.0
7.36.0 affected ≤ 7.36.0
7.35.0 affected ≤ 7.35.0
7.34.0 affected ≤ 7.34.0
7.33.0 affected ≤ 7.33.0
7.32.0 affected ≤ 7.32.0
7.31.0 affected ≤ 7.31.0
7.30.0 affected ≤ 7.30.0
7.29.0 affected ≤ 7.29.0
7.28.1 affected ≤ 7.28.1
7.28.0 affected ≤ 7.28.0
7.27.0 affected ≤ 7.27.0
7.26.0 affected ≤ 7.26.0
7.25.0 affected ≤ 7.25.0
7.24.0 affected ≤ 7.24.0
7.23.1 affected ≤ 7.23.1
7.23.0 affected ≤ 7.23.0
7.22.0 affected ≤ 7.22.0
7.21.7 affected ≤ 7.21.7
7.21.6 affected ≤ 7.21.6
7.21.5 affected ≤ 7.21.5
7.21.4 affected ≤ 7.21.4
7.21.3 affected ≤ 7.21.3
7.21.2 affected ≤ 7.21.2
7.21.1 affected ≤ 7.21.1
7.21.0 affected ≤ 7.21.0
7.20.1 affected ≤ 7.20.1
7.20.0 affected ≤ 7.20.0
7.19.7 affected ≤ 7.19.7
7.19.6 affected ≤ 7.19.6
7.19.5 affected ≤ 7.19.5
7.19.4 affected ≤ 7.19.4
7.19.3 affected ≤ 7.19.3
7.19.2 affected ≤ 7.19.2
7.19.1 affected ≤ 7.19.1
7.19.0 affected ≤ 7.19.0
7.18.2 affected ≤ 7.18.2
7.18.1 affected ≤ 7.18.1
7.18.0 affected ≤ 7.18.0
7.17.1 affected ≤ 7.17.1
7.17.0 affected ≤ 7.17.0
7.16.4 affected ≤ 7.16.4
7.16.3 affected ≤ 7.16.3
7.16.2 affected ≤ 7.16.2
7.16.1 affected ≤ 7.16.1
7.16.0 affected ≤ 7.16.0
7.15.5 affected ≤ 7.15.5
7.15.4 affected ≤ 7.15.4
7.15.3 affected ≤ 7.15.3
7.15.2 affected ≤ 7.15.2
7.15.1 affected ≤ 7.15.1
7.15.0 affected ≤ 7.15.0
7.14.1 affected ≤ 7.14.1
7.14.0 affected ≤ 7.14.0
7.13.2 affected ≤ 7.13.2
7.13.1 affected ≤ 7.13.1
7.13.0 affected ≤ 7.13.0
7.12.3 affected ≤ 7.12.3
7.12.2 affected ≤ 7.12.2
7.12.1 affected ≤ 7.12.1
7.12.0 affected ≤ 7.12.0
7.11.2 affected ≤ 7.11.2
7.11.1 affected ≤ 7.11.1
7.11.0 affected ≤ 7.11.0
7.10.8 affected ≤ 7.10.8
7.10.7 affected ≤ 7.10.7
7.10.6 affected ≤ 7.10.6
7.10.5 affected ≤ 7.10.5
7.10.4 affected ≤ 7.10.4
7.10.3 affected ≤ 7.10.3
7.10.2 affected ≤ 7.10.2
7.10.1 affected ≤ 7.10.1
7.10 affected ≤ 7.10
7.9.8 affected ≤ 7.9.8
7.9.7 affected ≤ 7.9.7
7.9.6 affected ≤ 7.9.6
7.9.5 affected ≤ 7.9.5
7.9.4 affected ≤ 7.9.4
7.9.3 affected ≤ 7.9.3
7.9.2 affected ≤ 7.9.2
7.9.1 affected ≤ 7.9.1
7.9 affected ≤ 7.9
7.8.1 affected ≤ 7.8.1
7.8 affected ≤ 7.8
7.7.3 affected ≤ 7.7.3
7.7.2 affected ≤ 7.7.2
7.7.1 affected ≤ 7.7.1
7.7 affected ≤ 7.7

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://curl.se/docs/CVE-2026-8932.html cve-icon
https://curl.se/docs/CVE-2026-8932.json cve-icon
https://hackerone.com/reports/3733910 cve-icon
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

Projects

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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

No data.

Weaknesses

No weakness.