What is CVE-2026-28435?

CVE-2026-28435 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-03-04.

How severe is CVE-2026-28435?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Yhirose Cpp-httplib

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib (httplib.h) does not enforce Server::set_payload_max_length() on the decompressed request body when using HandlerWithContentRead…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (24.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Yhirose Cpp-httplib — versions < 0.35.0

Weakness classification (CWE)

References

https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xvfx-w463-6fpp (x_refsource_CONFIRM)
https://github.com/yhirose/cpp-httplib/commit/c99d7472b5cf4869d3897b9afc9792063a3d15a8 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-28435?: CVE-2026-28435 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-03-04.
How severe is CVE-2026-28435?: High severity. CVSS v3 base score is 7.5 out of 10.