OpenCTI leaks support information due to inadequate access control

published 2024-12-26 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-41271 , GHSA-42mm-c8x3-g5q6 , PYSEC-2024-298

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits: 0; none known

OpenCTI is an open-source cyber threat intelligence platform. Before 6.3.0, general users can access information that can only be accessed by users with access privileges to admin and support information (SETTINGS_SUPPORT). This is due to inadequate access control for support information (http://<opencti_domain>/storage/get/support/UUID/UUID.zip), and that the UUID is available to general users using an attached query (logs query). This vulnerability is fixed in 6.3.0.

Patch / fix

fixed in 2

pypi pycti 6.3.0
citeum opencti 6.3.0

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 22 mo ago (2024-12-27)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-42mm-c8x3-g5q6 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
OSV	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	pycti	<6.3.0	6.3.0

Affected products

OpenCTI-Platform opencti

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-285 Improper Authorization

References

github.com /OpenCTI-Platform/opencti/security/advisories/GHSA-42mm-c8x3-g5q6
exploit, vendor-advisory, advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary