CVE-2025-5025

Public Exploit
No QUIC certificate pinning with wolfSSL

Description

libcurl supports *pinning* of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. Documentation says the option works with wolfSSL, failing to specify that it does not for QUIC and HTTP/3. Since pinning makes the transfer succeed if the pin is fine, users could unwittingly connect to an impostor server without noticing.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory curl.se Vendor Advisory curl.se
Affected: curl curl
Published at:
Updated at:

References

Link Tags
https://curl.se/docs/CVE-2025-5025.json vendor advisory
https://curl.se/docs/CVE-2025-5025.html vendor advisory
https://hackerone.com/reports/3153497 third party advisory issue tracking exploit
http://www.openwall.com/lists/oss-security/2025/05/28/5 mailing list third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-5025?
CVE-2025-5025 has been scored as a medium severity vulnerability.
How to fix CVE-2025-5025?
To fix CVE-2025-5025, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-5025 being actively exploited in the wild?
It is possible that CVE-2025-5025 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-5025?
CVE-2025-5025 affects curl curl.
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