CVE-2026-7009

5.3 mediumEPSS 0.3%

Medium (5.3) in haxx curl. EPSS 0.3% chance of exploitation in the next 30 days.

When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP stapling*, to verify that the server certificate is valid, it fails to detect OCSP problems and instead wrongly consider the response as fine.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2026-05-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

haxx:curl

References

https://curl.se/docs/CVE-2026-7009.html
https://curl.se/docs/CVE-2026-7009.json
https://hackerone.com/reports/3694390
http://www.openwall.com/lists/oss-security/2026/04/29/12
https://hackerone.com/reports/3694390

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