CVE & CISA-KEV Catalog

CVE-2025-13034

MEDIUM
5.9
CVSS v3
NVD

Description

When using `CURLOPT_PINNEDPUBLICKEY` option with libcurl or `--pinnedpubkey` with the curl tool,curl should check the public key of the server certificate to verify the peer. This check was skipped in a certain condition that would then make curl allow the connection without performing the proper check, thus not noticing a possible impostor. To skip this check, the connection had to be done with QUIC with ngtcp2 built to use GnuTLS and the user had to explicitly disable the standard certificate verification.

CWE-295Improper Certificate Validation

How to fix

Remediation Available
curlDebian
Fixed in:8.14.1-2+deb13u3CVE-2025-13034
Fixed in:8.18.0~rc2-1CVE-2025-13034
curlUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl3-gnutlsUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl3-nssUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl3t64-gnutlsUbuntu
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4Ubuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl4-gnutls-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4-nss-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl4-openssl-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4t64Ubuntu
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

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

Exploit Intelligence

0.23%probability of exploitation in 30 days
13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Patch1
Vendor Advisory1

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2015-4000Low3.7100%-Fix
CVE-2020-0601High8.189%KEVFix
CVE-2009-3555Critical9.887%-Fix
CVE-2022-26923High8.883%KEVFix
CVE-2023-27823Critical9.853%--
CVE-2022-42979High8.824%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-20.