CVE-2025-35434: CISA Thorium does not validate TLS connections to Elasticsearch

Published Sep 17, 2025
·
Updated

CISA Thorium does not validate TLS certificates when connecting to Elasticsearch. An unauthenticated attacker with access to a Thorium cluster could impersonate the Elasticsearch service. Fixed in 1.1.2.

Affected Software

2 affected components
CISA Thorium<1.1.2
CISA Thorium<1.1.2

Event History

Sep 17, 2025
CVE Published
via MITRE·04:53 PM
Data Sourced
via MITRE·04:53 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-35434?

CVE-2025-35434 is considered a high severity vulnerability due to its potential for unauthorized access and impersonation of the Elasticsearch service.

2

How do I fix CVE-2025-35434?

To fix CVE-2025-35434, upgrade to CISA Thorium version 1.1.2 or later.

3

What impact does CVE-2025-35434 have on my CISA Thorium deployment?

CVE-2025-35434 could allow an attacker to impersonate the Elasticsearch service, potentially leading to data breaches and unauthorized actions within your Thorium cluster.

4

Is my version of CISA Thorium affected by CVE-2025-35434?

CISA Thorium versions prior to 1.1.2 are affected by CVE-2025-35434 and require upgrading to patch the vulnerability.

5

Who is affected by CVE-2025-35434?

Organizations using CISA Thorium versions below 1.1.2 that connect to Elasticsearch are at risk from CVE-2025-35434.

Contact

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