What is CVE-2026-58184?

CVE-2026-58184 is a high-severity vulnerability in Apache Traffic Server, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2026-07-29.

How severe is CVE-2026-58184?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Apache Traffic Server

CVE-2026-58184

The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie operations and CIDR condition matching. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (28.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Affected products

Apache Traffic_server
Apache Software Foundation Traffic Server — versions 8.0.0, 9.0.0, 10.0.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2026-58184?: CVE-2026-58184 is a high-severity vulnerability in Apache Traffic Server, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2026-07-29.
How severe is CVE-2026-58184?: High severity. CVSS v3 base score is 8.2 out of 10.