CVE-2026-112381

Medium

Description

Apache Traffic Server can crash with a null pointer dereference when a client POST request is torn down via half-close while a chunked origin response is being reparsed from a reentrant write-ready callback, a timing-dependent race introduced by the CVE-2021-32564 flow-control backports. This issue affects Apache Traffic Server: 9.2.15, 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.

SeverityMedium

CVSS5.9

Exploit probability—

Product

Apache Traffic Server

PublishedOct 21, 2026

First seenOct 21, 2026

Weakness typeCWE-476NULL pointer dereference

How to fix

Vendor advisories

lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache Traffic Server	9.2.15, 10.1.4, 10.2.0	—

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