CVE-2026-8286

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.

Metadata

CVE ID: CVE-2026-8286
State: PUBLISHED
Assigner: curl
Reserved: 2026-05-11 07:06 UTC
Published: 2026-07-03 06:14 UTC
Last updated: 2026-07-03 06:14 UTC
Vendor / Product: curl / curl
Sources: cve.org · NVD

Severity & Metrics

No CVSS data available.

Affected products (1)

Vendor	Product	Platform	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 …

Weakness (CWE)

CWE	Source	Description
—	cna	CWE-295 Improper Certificate Validation

References (3)

json https://curl.se/docs/CVE-2026-8286.json
www https://curl.se/docs/CVE-2026-8286.html
issue https://hackerone.com/reports/3718195

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