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CVE-2026-7009

OCSP stapling bypass with Apple SecTrust

5.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.27%Up 0.3 points since May 13, 2026
90%50%10%1%

What each source reports

NVD Score used 5.3

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.

Record
CVE-2026-7009
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
CVE List 5.3

OCSP stapling bypass with Apple SecTrust

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.

Record
CVE-2026-7009
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
EUVDEUVD-2026-29931 5.3

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.

Record
EUVD-2026-29931
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-v355-7mqg-qj9c 5.3

When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP...

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.

Record
GHSA-v355-7mqg-qj9c
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
OSVALPINE-CVE-2026-7009 5.3

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.

Record
ALPINE-CVE-2026-7009
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVBELL-CVE-2026-7009 5.3
Record
BELL-CVE-2026-7009
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
Show 4 moreShow less
OSV 5.3

OCSP stapling bypass with Apple SecTrust

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.

Record
CVE-2026-7009
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVJLSEC-2026-1209 5.3

When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP...

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.

Record
JLSEC-2026-1209
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVRHSA-2026:19106 5.3

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:19106
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVCURL-CVE-2026-7009 No score

OCSP stapling bypass with Apple SecTrust

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.

Record
CURL-CVE-2026-7009
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
curl
Alpine:v3.23
 8.17.0 up to 8.20.0-r0
8.20.0-r0
curl
Alpine:v3.24
 8.17.0 up to 8.20.0-r0
8.20.0-r0
curl
Alpaquita:23
 8.1.0-r2 up to 8.20.0-r0
8.20.0-r0
curl
Alpaquita:25
 8.14.0-r1 up to 8.20.0-r0
8.20.0-r0
curl
Alpaquita:stream
 8.1.2-r0 up to 8.20.0-r0
8.20.0-r0
curl
BellSoft Hardened Containers:stream
 8.1.2-r0 up to 8.20.0-r0
8.20.0-r0
CURL_jll
Julia
 8.17.0+0 up to 8.20.0+0
8.20.0+0
LibCURL_jll
Julia
 8.17.0+0 up to 8.20.0+0
8.20.0+0
curl
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
 before 0:8.20.0-2.hum1
0:8.20.0-2.hum1
libcurl
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
 before 0:8.20.0-2.hum1
0:8.20.0-2.hum1
libcurl-devel
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
 before 0:8.20.0-2.hum1
0:8.20.0-2.hum1
libcurl-minimal
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
 before 0:8.20.0-2.hum1
0:8.20.0-2.hum1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-7009 is a medium vulnerability (CVSS 5.3) in Curl, published April 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in curl 8.20.0-r0.

References

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