CVE-2025-35434

2.3 lowEPSS 0.2%

Low (2.3) in cisa thorium. EPSS 0.2% chance of exploitation in the next 30 days.

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

CVSS 4.0

2.3 low

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2025-09-17
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cisa:thorium

References

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.cve.org/CVERecord?id=CVE-2025-35434

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