CVE-2026-35211

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260401.0, the OpenCTI GraphQL API exposes a script filter operator in its FilterOperator enum that allows any authenticated user with the KNOWLEDGE capability to pass user-supplied Elasticsearch Painless script values directly into search queries without validation or sanitization, allowing computationally expensive scripts to consume cluster CPU resources and degrade or deny service for all users. This issue is fixed in version 7.260401.0.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWEs

CWE-94, CWE-863

Published

2026-07-08

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• citeum:opencti

Packages (OSV)

References

• https://github.com/OpenCTI-Platform/opencti/commit/b134ccedf9e68386723cb42197f8e1d60c3bdbd9
• https://github.com/OpenCTI-Platform/opencti/pull/15284
• https://github.com/OpenCTI-Platform/opencti/releases/tag/7.260401.0
• https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-qpp6-p693-rmm4

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