🛡️ CVE-2026-27960 — opencti

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-287 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-27960 is classified as CWE-287: Improper Authentication. The identity of the caller is not established correctly, so an attacker can act as another user.

Affected software

CVE-2026-27960 is recorded against 3 packages.

  • opencti (from 6.9.0 up to 6.9.13)
  • pycti (from 6.9.0 up to 6.9.13)
  • unknown

Timeline and source

Published on 5 May 2026 and last revised on 25 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-287
Public Exploit ✅ No
Source NVD
Published 2026-05-05
Updated 2026-08-11
Modified 2026-07-25
Fix URL N/A

Affected Packages

Software From version Fixed in
opencti 6.9.0 6.9.13
pycti 6.9.0 6.9.13
unknown — —

Similar Threats

Exploit Protection

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