We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.

Please see our statement on Data Privacy.

Crisp.chat (Helpdesk and Chat)

Ok

THREATINT
PUBLISHED

CVE-2025-52887

cpp-httplib has unlimited number of http header fields, which causes memory leak



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.

Reserved 2025-06-20 | Published 2025-06-26 | Updated 2025-06-26 | Assigner GitHub_M


HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-400: Uncontrolled Resource Consumption

Product status

= 0.21.0
affected

References

github.com/...ttplib/security/advisories/GHSA-xjhg-gf59-p92h

github.com/...ommit/28dcf379e82a2cdb544d812696a7fd46067eb7f9

cve.org (CVE-2025-52887)

nvd.nist.gov (CVE-2025-52887)

Download JSON

Share this page
https://cve.threatint.eu/CVE/CVE-2025-52887

Support options

Helpdesk Chat, Email, Knowledgebase