CVE-2026-8932
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 0.40% 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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.7, < 8.21.0 |
References
- https://curl.se/docs/CVE-2026-8932.htmlPatch, Vendor Advisory
- https://curl.se/docs/CVE-2026-8932.jsonVendor Advisory
- https://hackerone.com/reports/3733910Exploit, Issue Tracking, Third Party Advisory
- https://hackerone.com/reports/3733910Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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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.
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