What is CVE-2026-46527?

CVE-2026-46527 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-29.

How severe is CVE-2026-46527?

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

NULL pointer dereference in Yhirose Cpp-httplib

CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::set_trusted_proxies() with a non-empty trusted-proxy list, an attacker can send an HTTP request that incl…

EPSS: 0.001 (19.2th 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 < 0.44.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

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

Frequently asked questions

What is CVE-2026-46527?: CVE-2026-46527 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-29.
How severe is CVE-2026-46527?: High severity. CVSS v3 base score is 7.5 out of 10.