CVE-2025-53628CWE-770CWE-835

cpp-httplib does not limit the length of a line

Medium · published July 10, 2025

CVSS v4.0
6.3
EPSS
1%
Percentile
43.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00524 · 43.6th percentile
Weaknesses
CWE-770 · Allocation of Resources Without Limits or Throttling; CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2025-07-10T19:45Z
EPSS history
Timeline
  • 10 JUL 19:45Z
    cpp-httplib does not limit the length of a line
    cvelistv5