CVE-2025-52887

HIGH

7.5

Description

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In version 0.21.0, when many http headers fields are passed in, the library does not limit the number of headers, and the memory associated with the headers will not be released when the connection is disconnected. This leads to potential exhaustion of system memory and results in a server crash or unresponsiveness. Version 0.22.0 contains a patch for the issue.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published6/26/2025

Last Modified8/6/2025

Sourcenvd

Honeypot Sightings0

Affected Products

yhirose:cpp-httplib

Weaknesses (CWE)

CWE-400

References

https://github.com/yhirose/cpp-httplib/commit/28dcf379e82a2cdb544d812696a7fd46067eb7f9(security-advisories@github.com)

https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xjhg-gf59-p92h(security-advisories@github.com)

IOC Correlations

No correlations recorded

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