Description
Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards unvalidated guest-supplied metric IDs to the internal stats API.



This issue affects Apache Traffic Server: from 10.0.0 through 10.1.4, 10.2.0.



Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.
Published: 2026-10-21
Score: 8.8 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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History

Wed, 21 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards unvalidated guest-supplied metric IDs to the internal stats API. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.
Title Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-21T18:21:32.055Z

Reserved: 2026-10-16T20:15:36.197Z

Link: CVE-2026-111804

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-21T19:16:59.007

Modified: 2026-10-21T19:16:59.007

Link: CVE-2026-111804

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses