Main Vulnerability Database Vulnerabilities #VU128458

Improper Certificate Validation in cURL - CVE-2026-7009

Published: April 29, 2026

Vulnerability identifier: #VU128458

CSH Severity: Medium

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-7009

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation within OCSP stapling with Apple SecTrust. A remote attacker can cause invalid certificates to be accepted as trusted.

Affected software

cURL
Fedora
curl

How to mitigate CVE-2026-7009

Install updates from vendor's website.

cURL - update to 8.20.0
curl - update to 8.18.0-8.fc44

External References

https://curl.se/docs/CVE-2026-7009.html

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