CVE-2025-35434

low-risk
Published 2025-09-17

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.

Do I need to act?

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0.06% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.2/10 Medium
ADJACENT_NETWORK / HIGH complexity

Affected Products (1)

Thorium

Affected Vendors

Cisa

References (4)

Product https://github.com/cisagov/thorium/blob/main/api/src/models/backends/setup/elast...
Release Notes https://github.com/cisagov/thorium/releases/tag/1.1.2
Vendor Advisory https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/...
Third Party Advisory https://www.cve.org/CVERecord?id=CVE-2025-35434
16
/ 100
low-risk
Severity 11/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal