CVE-2026-111804CWE-416

CVE-2026-111804

High · published October 21, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
12.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
8.8 · 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
EPSS
0.00229 · 12.9th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-21T23:16Z
References (1)
https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 21 OCT 18:21Z
    Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs
    cvelistv5
  • 21 OCT 18:21Z
    Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs
    cvelistv5