CVE-2025-0825

CRLF injection in Cpp-httplib

CVSS 6.9 MEDIUMEPSS 0.4%CWE-113

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Affected products

cpp-httplib

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://advisory.checkmarx.net/advisory/CVE-2025-0825/https://github.com/yhirose/cpp-httplib/commit/9c36aae4b73e2b6e493f4133e4173103c9266289