CVE-2026-27960CRITICAL 9.8EPSS p37.0%

CVE-2026-27960CVE-2026-27960

Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.47% probability of exploitation · percentile 37.0% · 2026-06-18T12:00:27Z
Published2026-05-05
Last modified2026-05-12

Underlying weaknesses· 1

CWE-287

References

  1. https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-6vvv-vmfr-xhrx

1

TypeTargetConfidenceTier
WeaknessImproper Authenticationcwe-2870%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-24977
CVE
CVE-2025-61781
CVE
CVE-2026-41404
CVE
CVE-2026-35212
CVE
CVE-2026-21886
CVE
CVE-2026-48190
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.