CVE-2026-111811 – Apache Traffic Server: tsmemcache plugin exposes the shared proxy cache over the network with no authentication

​CVE ID :CVE-2026-111811

Published : Oct. 21, 2026, 7:17 p.m. | 23 minutes ago

Description :Apache Traffic Server’s experimental tsmemcache plugin allows unauthenticated network read, write, and deletion of the shared proxy cache.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.

Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

Severity: 9.4 | CRITICAL

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