CVE-2026-58159

High

Description

Apache Traffic Server can bypass IP access controls on UDS listeners and through ACL matching errors. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

SeverityHigh

CVSS8.2

Exploit probability—

Product

Apache Traffic Server

PublishedJul 29, 2026

First seenJul 29, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

apache traffic_server9.2.15, 10.1.4 or later

Vendor advisories

lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

Affected products

Product	Affected versions	Fixed in
apache traffic_server	8.0.0 ≤ v ≤ 8.1.9, 9.0.0 ≤ v < 9.2.15, 10.0.0 ≤ v < 10.1.4	9.2.15, 10.1.4

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