---
title: "CVE-2026-111804: Apache Traffic Server - Use After Free"
description: "Apache Traffic Server 10.0.0 through 10.1.4 and 10.2.0 contains a use-after-free caused by improper handling in the experimental wasm plugin's transaction-close handler, letting attackers cause memory corruption, exploit requires triggering transaction close."
url: https://panop.io/threat-heartbeat/CVE-2026-111804/
---

# CVE-2026-111804 Apache Traffic Server - Use After Free

Apache Traffic Server 10.0.0 through 10.1.4 and 10.2.0 contains a use-after-free caused by improper handling in the experimental wasm plugin's transaction-close handler, letting attackers cause memory corruption, exploit requires triggering transaction close.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111804)

## Details

Type

Use After Free

Impact

Use After Free, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Published

21 October 2026

Updated

22 October 2026

Weakness

[CWE-416](https://cwe.mitre.org/data/definitions/416.html)

## Vendor fix

Upgrade to versions 10.1.5 or 10.2.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-111804](https://nvd.nist.gov/vuln/detail/CVE-2026-111804)
- [https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc](https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)