Medium severity · published May 13, 2026
CVE-2026-7009
OCSP stapling bypass with Apple SecTrust
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
curl · curl
8.19.0 through 8.19.0; 8.18.0 through 8.18.0; 8.17.0 through 8.17.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7009
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7009
Patch
https://curl.se/docs/CVE-2026-7009.html
Product
https://curl.se/docs/CVE-2026-7009.json
Exploit
https://hackerone.com/reports/3694390
Mailing List
http://www.openwall.com/lists/oss-security/2026/04/29/12
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