CVE-2026-111804
Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 |
| Vendor | apache software foundation |
| Product | apache traffic server |
| Published | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
Apache Software Foundation / Apache Traffic Server
10.0.0 ≤ 10.1.4 10.2.0
References
Credits
🔍 Omkhar Arasaratnam 🔍 Apache Community