CVE-2025-0825

Public Exploit
CRLF injection in Cpp-httplib

Description

cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters ("\r\n") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.

Category

6.9
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.07%
Third-Party Advisory checkmarx.net
Published at:
Updated at:

References

Link Tags
https://github.com/yhirose/cpp-httplib/commit/9c36aae4b73e2b6e493f4133e4173103c9266289 patch
https://advisory.checkmarx.net/advisory/CVE-2025-0825/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2025-0825?
CVE-2025-0825 has been scored as a medium severity vulnerability.
How to fix CVE-2025-0825?
To fix CVE-2025-0825, 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-2025-0825 being actively exploited in the wild?
It is possible that CVE-2025-0825 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-2025-0825?
CVE-2025-0825 affects .
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.