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Vulnerability details: VCID-8gcn-2c8s-ekay
Vulnerability ID VCID-8gcn-2c8s-ekay
Aliases CVE-2025-26621
PYSEC-2025-180
Summary OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.5.2, any user with the capability manage customizations can edit webhook that will execute javascript code. This can be abused to cause a denial of service attack by prototype pollution, making the node js server running the OpenCTI frontend become unavailable. Version 6.5.2 fixes the issue.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 6.8 https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p
cvssv3.1 6.8 https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm
Reference id Reference type URL
https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p
https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Found at https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Found at https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:23:04.553944+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/pycti/PYSEC-2025-180.yaml 38.6.0