Vulnerability Description
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
CVSS Score
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.30.0, < 8.21.0 |
Related Weaknesses (CWE)
References
- https://curl.se/docs/CVE-2026-8286.htmlPatchVendor Advisory
- https://curl.se/docs/CVE-2026-8286.jsonVendor Advisory
- https://hackerone.com/reports/3718195ExploitIssue TrackingThird Party Advisory
- https://hackerone.com/reports/3718195ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2026-8286?
CVE-2026-8286 is a vulnerability with a CVSS score of 8.1 (HIGH). A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
How severe is CVE-2026-8286?
CVE-2026-8286 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8286?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.