CVE-2025-13034 Affecting curl package, versions <0:8.17.0-1.amzn2023.0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2023-CURL-15317592
- published19 Feb 2026
- disclosed8 Jan 2026
Introduced: 8 Jan 2026
CVE-2025-13034 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 curl to version 0:8.17.0-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1375.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
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.