Description
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.
Affected products
haxx: curl
References5
- curl.se/docs/CVE-2026-7009.html PatchVendor Advisory
- hackerone.com/reports/3694390 ExploitIssue TrackingPatch
- www.openwall.com/lists/oss-security/2026/04/29/12 Mailing ListPatchThird Party Advisory
- hackerone.com/reports/3694390 ExploitIssue TrackingPatch
- curl.se/docs/CVE-2026-7009.json Product
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 20 · as of 14 November 2026
- CWE
- CWE-295
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