---
title: "CVE-2026-109359: Contrast - Authentication Bypass"
description: "Contrast 1.8.0 before 1.24.1 contains an improper verification vulnerability in Coordinator peer recovery that fails to confirm the serving peer uses the same manifest generation, letting attackers with write access to manifest history replay superseded history or disclose Mesh CA key, exploit requires write access to manifest history or secret seed."
url: https://panop.io/threat-heartbeat/CVE-2026-109359/
---

# CVE-2026-109359 Contrast - Authentication Bypass

Contrast 1.8.0 before 1.24.1 contains an improper verification vulnerability in Coordinator peer recovery that fails to confirm the serving peer uses the same manifest generation, letting attackers with write access to manifest history replay superseded history or disclose Mesh CA key, exploit requires write access to manifest history or secret seed.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.11% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-109359)

## Details

Type

Authentication Bypass

Impact

Information Disclosure, Privilege Escalation

CVSS vector

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

Published

12 October 2026

Updated

15 October 2026

Weakness

[CWE-345](https://cwe.mitre.org/data/definitions/345.html)

## Vendor fix

Upgrade to version 1.24.1 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-2026-109359](https://nvd.nist.gov/vuln/detail/CVE-2026-109359)
- [https://github.com/edgelesssys/contrast/security/advisories/GHSA-rxcv-p3px-m3c3](https://github.com/edgelesssys/contrast/security/advisories/GHSA-rxcv-p3px-m3c3)
- [https://www.vulncheck.com/advisories/contrast-1.8.0-before-1.24.1-mesh-ca-key-cross-manifest-exposure-via-peer-recovery](https://www.vulncheck.com/advisories/contrast-1.8.0-before-1.24.1-mesh-ca-key-cross-manifest-exposure-via-peer-recovery)

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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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