OpenCTI up to 6.9.12 improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in OpenCTI up to 6.9.12. The impacted element is an unknown function. This manipulation causes improper authentication. This vulnerability is registered as CVE-2026-27960. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in OpenCTI up to 6.9.12. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-27960 since 02/25/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 6.9.13 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-757) and CERT Bund (WID-SEC-2026-1357). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source OpenCTI

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenCTI 6.9.13

Timelineinfo

02/25/2026 CVE reserved
05/05/2026 +68 days Advisory disclosed
05/05/2026 +0 days VulDB entry created
07/24/2026 +80 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-6vvv-vmfr-xhrx
Status: Confirmed

CVE: CVE-2026-27960 (🔒)
GCVE (CVE): GCVE-0-2026-27960
GCVE (VulDB): GCVE-100-361225
CERT Bund: WID-SEC-2026-1357 - OpenCTI: Schwachstelle ermöglicht Erlangen von Administratorrechten
CNNVD: CNNVD-202605-757 - OpenCTI 授权问题漏洞

Entryinfo

Created: 05/05/2026 21:47
Updated: 07/24/2026 07:42
Changes: 05/05/2026 21:47 (63), 05/07/2026 23:36 (6), 07/24/2026 07:42 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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