CVE-2025-35434

CRITICAL 9.8CVE-2025-35434 · Published 17/09/2025 · updated 17/06/2026

In short

CVE-2025-35434 is a CRITICAL (CVSS 9.8) vulnerability affecting thorium (cisa).
Chance of exploitation in the next 30 days (EPSS): 0.20%, higher than 10.0% of all vulnerabilities.
Fix: update to 1.1.2 or later.

Package	Affected versions	Patched versions
thorium cisa	`< 1.1.2`	`1.1.2`

Description

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.

References

cisagov/thorium · Product
cisagov/thorium release 1.1.2 · Release Notes
raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json · Vendor Advisory
cve.org/CVERecord · Third Party Advisory

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Package

Affected versions

Patched versions

thorium

cisa

< 1.1.2

1.1.2

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