What is CVE-2026-45352?

CVE-2026-45352 is a medium-severity vulnerability in Yhirose Cpp-httplib, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-05-29.

How severe is CVE-2026-45352?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Yhirose Cpp-httplib

CVE-2026-45352

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.43.4, negative chunk-size in chunked Transfer-Encoding causes unbounded memory allocation and process crash. The ChunkedDecoder::read_payload func…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (31.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Yhirose Cpp-httplib — versions < 0.43.4

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45352?: CVE-2026-45352 is a medium-severity vulnerability in Yhirose Cpp-httplib, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-05-29.
How severe is CVE-2026-45352?: Medium severity. CVSS v3 base score is 5.3 out of 10.