Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Yhirose | Cpp-Httplib | 0.21.0 |
Related Weaknesses (CWE)
References
- https://github.com/yhirose/cpp-httplib/commit/28dcf379e82a2cdb544d812696a7fd4606Patch
- https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xjhg-gf59-p92hExploitVendor Advisory
FAQ
What is CVE-2025-52887?
CVE-2025-52887 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2025-52887?
CVE-2025-52887 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-52887?
Check the references section above for vendor advisories and patch information. Affected products include: Yhirose Cpp-Httplib.