Resource exhaustion in Yhirose Cpp-httplib
CVE-2025-53628
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 vulnerabili…
EPSS: 0.004 (35.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Yhirose Cpp-httplib — versions < 0.20.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Not Applicable)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-53628?
- CVE-2025-53628 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 8.8/10. Published 2025-07-10.
- How severe is CVE-2025-53628?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-53628 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.