What is CVE-2026-58189?

CVE-2026-58189 is a high-severity vulnerability in Apache Software Foundation Traffic Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-07-29.

How severe is CVE-2026-58189?

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

SSRF in Apache Software Foundation Traffic Server

CVE-2026-58189

Apache Traffic Server allows redirect-limit bypass when plugins reset the retry counter, enabling SSRF amplification. 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…

Vulnerability class: SSRF (Server-Side Request Forgery)

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

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

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security@apache.org (vendor-advisory)

Frequently asked questions

What is CVE-2026-58189?: CVE-2026-58189 is a high-severity vulnerability in Apache Software Foundation Traffic Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-07-29.
How severe is CVE-2026-58189?: High severity. CVSS v3 base score is 7.5 out of 10.