CVE-2025-53628

Public Exploit
cpp-httplib does not limit the length of a line

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.

Category

6.3
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.04%
Affected: yhirose cpp-httplib
Published at:
Updated at:

References

Link Tags
https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw
https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w
https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e

Frequently Asked Questions

What is the severity of CVE-2025-53628?
CVE-2025-53628 has been scored as a medium severity vulnerability.
How to fix CVE-2025-53628?
To fix CVE-2025-53628, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-53628 being actively exploited in the wild?
It is possible that CVE-2025-53628 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-53628?
CVE-2025-53628 affects yhirose cpp-httplib.
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