What is CVE-2026-34059?

CVE-2026-34059 is a high-severity vulnerability in Apache Http_server, classified under Buffer Over-read. CVSS score: 7.5/10. Published 2026-05-04.

How severe is CVE-2026-34059?

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

Vulnerability in Apache Http_server

CVE-2026-34059

Buffer Over-read vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

EPSS: 0.001 (28.2th 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:H/I:N/A:N.

Affected products

Apache Http_server
Apache Software Foundation Http Server — versions 0

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-34059?: CVE-2026-34059 is a high-severity vulnerability in Apache Http_server, classified under Buffer Over-read. CVSS score: 7.5/10. Published 2026-05-04.
How severe is CVE-2026-34059?: High severity. CVSS v3 base score is 7.5 out of 10.