What is CVE-2026-58162?

CVE-2026-58162 is a critical-severity vulnerability in Apache Traffic Server, classified under Improper Certificate Validation. CVSS score: 10.0/10. Published 2026-07-29.

How severe is CVE-2026-58162?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Apache Traffic Server

CVE-2026-58162

The Apache Traffic Server certifier plugin generates certificates based on attacker-controlled client SNI. 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: Improper Certificate Validation

EPSS: 0.002 (13.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/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-295 — Improper Certificate Validation

References

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

Frequently asked questions

What is CVE-2026-58162?: CVE-2026-58162 is a critical-severity vulnerability in Apache Traffic Server, classified under Improper Certificate Validation. CVSS score: 10.0/10. Published 2026-07-29.
How severe is CVE-2026-58162?: Critical severity. CVSS v3 base score is 10.0 out of 10.