Name: CVE-2025-0825: Improper Neutralization of CRLF Sequences in HTTP Headers
Creator: Rapid7
Published: 2025-02-04T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-0825, CVSS 5.3, EPSS 0.00159

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 Details

CVSS 4.0 Base Score: 6.9 (MEDIUM)
CVSS 4.0 Vector: (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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade cpp-httplib	May 15, 2025	Feb 4, 2025
Suse	—	Upgrade cpp-httplib-develUpgrade libcpp-httplib0_12	Feb 20, 2025	Feb 4, 2025

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CVSS Details

Covered by Rapid7

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