CVE-2026-39980

highpriority · track · 39EPSS 0.014 · 71 %ileexploit · weaponizedDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · weaponized

Likely / severe?

1.35% (71st) EPSS

CVSS 7.2 · high

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5.

cvss

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7–9.1

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 2.3 · impact 6

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.17highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1336US

exploits (1)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/opencti_notifier_rceOpenCTI Authentication Bypass and Notifier EJS Remote Code Executionweaponized · metasploit

affected products (5)

Products and version ranges known to be affected.

Open Source OpenCTI <6.9.5all versionscert_bundDE
Open Source OpenCTI< 6.9.5cert_bundDE
OpenCTI-Platform opencti≤ < 6.9.5enisa_euvdEU
citeum opencti< 6.9.5nvdUScpe:2.3:a:citeum:opencti:*:*:*:*:*:*:*:*
PyPI pycti< 6.9.5osvUSpkg:pypi/pycti

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1036OpenCTI: Schwachstelle ermöglicht CodeausführungDeutsch2026-04-08csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in OpenCTI ausnutzen, um beliebigen Programmcode auszuführen.
PYSEC-2026-22652026-04-09vendor · osvUS
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-04-09modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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