CVE-2026-8932
HIGHCVSS 7.5/10EPSS 0.13%
Last modified
CVE-2026-8932 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.13% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| curl | curl | >= 8.20.0, <= 8.20.0; >= 8.19.0, <= 8.19.0; >= 8.18.0, <= 8.18.0; >= 8.17.0, <= 8.17.0; >= 8.16.0, <= 8.16.0; >= 8.15.0, <= 8.15.0; >= 8.14.1, <= 8.14.1; >= 8.14.0, <= 8.14.0; >= 8.13.0, <= 8.13.0; >= 8.12.1, <= 8.12.1; >= 8.12.0, <= 8.12.0; >= 8.11.1, <= 8.11.1; >= 8.11.0, <= 8.11.0; >= 8.10.1, <= 8.10.1; >= 8.10.0, <= 8.10.0; >= 8.9.1, <= 8.9.1; >= 8.9.0, <= 8.9.0; >= 8.8.0, <= 8.8.0; >= 8.7.1, <= 8.7.1; >= 8.7.0, <= 8.7.0; >= 8.6.0, <= 8.6.0; >= 8.5.0, <= 8.5.0; >= 8.4.0, <= 8.4.0; >= 8.3.0, <= 8.3.0; >= 8.2.1, <= 8.2.1; >= 8.2.0, <= 8.2.0; >= 8.1.2, <= 8.1.2; >= 8.1.1, <= 8.1.1; >= 8.1.0, <= 8.1.0; >= 8.0.1, <= 8.0.1; >= 8.0.0, <= 8.0.0; >= 7.88.1, <= 7.88.1; >= 7.88.0, <= 7.88.0; >= 7.87.0, <= 7.87.0; >= 7.86.0, <= 7.86.0; >= 7.85.0, <= 7.85.0; >= 7.84.0, <= 7.84.0; >= 7.83.1, <= 7.83.1; >= 7.83.0, <= 7.83.0; >= 7.82.0, <= 7.82.0; >= 7.81.0, <= 7.81.0; >= 7.80.0, <= 7.80.0; >= 7.79.1, <= 7.79.1; >= 7.79.0, <= 7.79.0; >= 7.78.0, <= 7.78.0; >= 7.77.0, <= 7.77.0; >= 7.76.1, <= 7.76.1; >= 7.76.0, <= 7.76.0; >= 7.75.0, <= 7.75.0; >= 7.74.0, <= 7.74.0; >= 7.73.0, <= 7.73.0; >= 7.72.0, <= 7.72.0; >= 7.71.1, <= 7.71.1; >= 7.71.0, <= 7.71.0; >= 7.70.0, <= 7.70.0; >= 7.69.1, <= 7.69.1; >= 7.69.0, <= 7.69.0; >= 7.68.0, <= 7.68.0; >= 7.67.0, <= 7.67.0; >= 7.66.0, <= 7.66.0; >= 7.65.3, <= 7.65.3; >= 7.65.2, <= 7.65.2; >= 7.65.1, <= 7.65.1; >= 7.65.0, <= 7.65.0; >= 7.64.1, <= 7.64.1; >= 7.64.0, <= 7.64.0; >= 7.63.0, <= 7.63.0; >= 7.62.0, <= 7.62.0; >= 7.61.1, <= 7.61.1; >= 7.61.0, <= 7.61.0; >= 7.60.0, <= 7.60.0; >= 7.59.0, <= 7.59.0; >= 7.58.0, <= 7.58.0; >= 7.57.0, <= 7.57.0; >= 7.56.1, <= 7.56.1; >= 7.56.0, <= 7.56.0; >= 7.55.1, <= 7.55.1; >= 7.55.0, <= 7.55.0; >= 7.54.1, <= 7.54.1; >= 7.54.0, <= 7.54.0; >= 7.53.1, <= 7.53.1; >= 7.53.0, <= 7.53.0; >= 7.52.1, <= 7.52.1; >= 7.52.0, <= 7.52.0; >= 7.51.0, <= 7.51.0; >= 7.50.3, <= 7.50.3; >= 7.50.2, <= 7.50.2; >= 7.50.1, <= 7.50.1; >= 7.50.0, <= 7.50.0; >= 7.49.1, <= 7.49.1; >= 7.49.0, <= 7.49.0; >= 7.48.0, <= 7.48.0; >= 7.47.1, <= 7.47.1; >= 7.47.0, <= 7.47.0; >= 7.46.0, <= 7.46.0; >= 7.45.0, <= 7.45.0; >= 7.44.0, <= 7.44.0; >= 7.43.0, <= 7.43.0; >= 7.42.1, <= 7.42.1; >= 7.42.0, <= 7.42.0; >= 7.41.0, <= 7.41.0; >= 7.40.0, <= 7.40.0; >= 7.39.0, <= 7.39.0; >= 7.38.0, <= 7.38.0; >= 7.37.1, <= 7.37.1; >= 7.37.0, <= 7.37.0; >= 7.36.0, <= 7.36.0; >= 7.35.0, <= 7.35.0; >= 7.34.0, <= 7.34.0; >= 7.33.0, <= 7.33.0; >= 7.32.0, <= 7.32.0; >= 7.31.0, <= 7.31.0; >= 7.30.0, <= 7.30.0; >= 7.29.0, <= 7.29.0; >= 7.28.1, <= 7.28.1; >= 7.28.0, <= 7.28.0; >= 7.27.0, <= 7.27.0; >= 7.26.0, <= 7.26.0; >= 7.25.0, <= 7.25.0; >= 7.24.0, <= 7.24.0; >= 7.23.1, <= 7.23.1; >= 7.23.0, <= 7.23.0; >= 7.22.0, <= 7.22.0; >= 7.21.7, <= 7.21.7; >= 7.21.6, <= 7.21.6; >= 7.21.5, <= 7.21.5; >= 7.21.4, <= 7.21.4; >= 7.21.3, <= 7.21.3; >= 7.21.2, <= 7.21.2; >= 7.21.1, <= 7.21.1; >= 7.21.0, <= 7.21.0; >= 7.20.1, <= 7.20.1; >= 7.20.0, <= 7.20.0; >= 7.19.7, <= 7.19.7; >= 7.19.6, <= 7.19.6; >= 7.19.5, <= 7.19.5; >= 7.19.4, <= 7.19.4; >= 7.19.3, <= 7.19.3; >= 7.19.2, <= 7.19.2; >= 7.19.1, <= 7.19.1; >= 7.19.0, <= 7.19.0; >= 7.18.2, <= 7.18.2; >= 7.18.1, <= 7.18.1; >= 7.18.0, <= 7.18.0; >= 7.17.1, <= 7.17.1; >= 7.17.0, <= 7.17.0; >= 7.16.4, <= 7.16.4; >= 7.16.3, <= 7.16.3; >= 7.16.2, <= 7.16.2; >= 7.16.1, <= 7.16.1; >= 7.16.0, <= 7.16.0; >= 7.15.5, <= 7.15.5; >= 7.15.4, <= 7.15.4; >= 7.15.3, <= 7.15.3; >= 7.15.2, <= 7.15.2; >= 7.15.1, <= 7.15.1; >= 7.15.0, <= 7.15.0; >= 7.14.1, <= 7.14.1; >= 7.14.0, <= 7.14.0; >= 7.13.2, <= 7.13.2; >= 7.13.1, <= 7.13.1; >= 7.13.0, <= 7.13.0; >= 7.12.3, <= 7.12.3; >= 7.12.2, <= 7.12.2; >= 7.12.1, <= 7.12.1; >= 7.12.0, <= 7.12.0; >= 7.11.2, <= 7.11.2; >= 7.11.1, <= 7.11.1; >= 7.11.0, <= 7.11.0; >= 7.10.8, <= 7.10.8; >= 7.10.7, <= 7.10.7; >= 7.10.6, <= 7.10.6; >= 7.10.5, <= 7.10.5; >= 7.10.4, <= 7.10.4; >= 7.10.3, <= 7.10.3; >= 7.10.2, <= 7.10.2; >= 7.10.1, <= 7.10.1; >= 7.10, <= 7.10; >= 7.9.8, <= 7.9.8; >= 7.9.7, <= 7.9.7; >= 7.9.6, <= 7.9.6; >= 7.9.5, <= 7.9.5; >= 7.9.4, <= 7.9.4; >= 7.9.3, <= 7.9.3; >= 7.9.2, <= 7.9.2; >= 7.9.1, <= 7.9.1; >= 7.9, <= 7.9; >= 7.8.1, <= 7.8.1; >= 7.8, <= 7.8; >= 7.7.3, <= 7.7.3; >= 7.7.2, <= 7.7.2; >= 7.7.1, <= 7.7.1; >= 7.7, <= 7.7 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-8932?
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.
How severe is CVE-2026-8932?
CVE-2026-8932 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-8932?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-8932?
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