CVE-2026-8286

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 v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-8286.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-8286.json	Vendor Advisory
https://hackerone.com/reports/3718195	Exploit Issue Tracking Third Party Advisory
https://hackerone.com/reports/3718195	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-03 07:16

Updated : 2026-09-15 07:16

NVD link : CVE-2026-8286

Mitre link : CVE-2026-8286

CVE.ORG link : CVE-2026-8286

JSON object : View

Products Affected

haxx

curl

CWE

CWE-295

Improper Certificate Validation

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