Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.7, < 8.21.0 |
References
- https://curl.se/docs/CVE-2026-8932.htmlPatchVendor Advisory
- https://curl.se/docs/CVE-2026-8932.jsonVendor Advisory
- https://hackerone.com/reports/3733910ExploitIssue TrackingThird Party Advisory
- https://hackerone.com/reports/3733910ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2026-8932?
CVE-2026-8932 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 connec...
How severe is CVE-2026-8932?
CVE-2026-8932 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8932?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.