CVE-2025-53628

cpp-httplib does not limit the length of a line

State: Published
Severity: 6.3 Medium
Published: Jul 10, 2025
Updated: Jul 10, 2025
Reserved: Jul 7, 2025

Description

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.20.1, cpp-httplib does not have a limit for a unique line, permitting an attacker to explore this to allocate memory arbitrarily. This vulnerability is fixed in 0.20.1. NOTE: This vulnerability is related to CVE-2025-53629.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
cpp-httplibyhirose	< 0.20.1Affected

References

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