---
title: "CVE-2026-111814: Apache Traffic Server - Authentication Bypass"
description: "Apache Traffic Server 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, and 10.2.0 contains a broken authentication caused by reuse of pooled TLS sessions authenticated with one client certificate for transactions configured to present a different one, letting attackers bypass client certificate authentication, exploit requires default outbound session-sharing policy."
url: https://panop.io/threat-heartbeat/CVE-2026-111814/
---

# CVE-2026-111814 Apache Traffic Server - Authentication Bypass

Apache Traffic Server 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, and 10.2.0 contains a broken authentication caused by reuse of pooled TLS sessions authenticated with one client certificate for transactions configured to present a different one, letting attackers bypass client certificate authentication, exploit requires default outbound session-sharing policy.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111814)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

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

Published

21 October 2026

Updated

22 October 2026

Weakness

[CWE-295](https://cwe.mitre.org/data/definitions/295.html)

## Vendor fix

Upgrade to versions 9.2.16, 10.1.5, or 10.2.1 or later.

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-2026-111814](https://nvd.nist.gov/vuln/detail/CVE-2026-111814)
- [https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc](https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc)

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## 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

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