CVE-2023-26130: Cpp-Httplib Project Cpp-Httplib

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Versions of the package yhirose/cpp-httplib before 0.12.4 are vulnerable to CRLF Injection when untrusted user input is used to set the content-type header in the HTTP .Patch, .Post, .Put and .Delete requests. This can lead to logical errors and other misbehaviors. **Note:** This issue is present due to an incomplete fix for [CVE-2020-11709](https://security.snyk.io/vuln/SNYK-UNMANAGED-YHIROSECPPHTTPLIB-2366507).

Affected products

• Cpp-Httplib Project Cpp-Httplib: before 0.12.4 (fixed in 0.12.4)

Published 2023-05-30. Last modified 2026-06-17.