CVE-2025-52887

HIGH EPSS 34.4%
Published Jun 26, 20251y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
34.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
yhirosecpp-httplib0.21.0any

References 2

  • github.com https://github.com/yhirose/cpp-httplib/commit/28dcf379e82a2cdb544d812696a7fd46067eb7f9
    Patch
  • github.com https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xjhg-gf59-p92h
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/yhirose/cpp-httplib/commit/28dcf379e82a2cdb544d812696a7fd46067eb7f9
    Patch