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CVE-2025-35434

Good to know:

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Date: September 17, 2025

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.

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2025-35434
https://www.cve.org/CVERecord?id=CVE-2025-35434
https://github.com/cisagov/thorium/blob/main/api/src/models/backends/setup/elastic_setup.rs#L36-L43
https://github.com/cisagov/thorium/releases/tag/1.1.2
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json
https://www.mend.io/vulnerability-database/CVE-2025-35434

Severity Score

Weakness Type (CWE)

Improper Certificate Validation

CWE-295

Top Fix

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Upgrade Version

Upgrade to version https://github.com/cisagov/thorium.git - 1.1.2

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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