PT-2026-120785 · Apache · Apache Traffic Server

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CVE-2026-111808

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Published

2026-10-21

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Updated

2026-10-21

CVSS v3.1

8.6

High

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a malformed padded HTTP/2 DATA frame.
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.

Fix

Integer Underflow

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Weakness Enumeration

Related Identifiers

CVE-2026-111808

Affected Products

Apache Traffic Server