hen 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.
| Link | Resource |
|---|---|
| https://curl.se/docs/CVE-2025-13034.html | Vendor Advisory Patch |
| https://curl.se/docs/CVE-2025-13034.json | Vendor Advisory |
20 Jan 2026, 14:54
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Haxx curl
Haxx |
|
| CPE | cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | |
| References | () https://curl.se/docs/CVE-2025-13034.html - Vendor Advisory, Patch | |
| References | () https://curl.se/docs/CVE-2025-13034.json - Vendor Advisory |
08 Jan 2026, 15:15
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-295 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.9 |
08 Jan 2026, 10:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2026-01-08 10:15
Updated : 2026-01-20 14:54
NVD link : CVE-2025-13034
Mitre link : CVE-2025-13034
CVE.ORG link : CVE-2025-13034
JSON object : View
Improper Certificate Validation