CRLF injection in Cpp-httplib - CVE-2025-0825

Vulnerability identifier: #VU106998

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N]

CVE-ID: CVE-2025-0825

CWE-ID: CWE-93

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of attacker-supplied data. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.

Cpp-httplib
openEuler
Fedora
cpp-httplib
cpp-httplib-debuginfo
cpp-httplib-debugsource

Install updates from vendor's website.

Cpp-httplib - update to 0.18.4
cpp-httplib - addressed in versions 0.12.4-3, 0.14.0-3
cpp-httplib-debuginfo - update to 0.14.0-3
cpp-httplib-debugsource - update to 0.14.0-3
cpp-httplib - addressed in versions 0.19.0-1.fc42, 0.19.0-1.fc43

• https://github.com/yhirose/cpp-httplib/commit/9c36aae4b73e2b6e493f4133e4173103c9266289

• CRLF injection in cpp-httplib
• Fedora 43 update for cpp-httplib
• Fedora 42 update for cpp-httplib
• openEuler 24.03 LTS SP1 update for cpp-httplib
• openEuler 24.03 LTS update for cpp-httplib
• openEuler 22.03 LTS SP4 update for cpp-httplib
• openEuler 22.03 LTS SP3 update for cpp-httplib