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.

CVSS Details

CVSS 4.0 Base Score: 8.8 (HIGH)
CVSS 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 8.2
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H)

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CVSS Details

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CVE-2026-111804: Apache Software Foundation Apache Traffic Server: Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards…

CVSS Details

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