CVE-2026-73140 cti-transmute Evaluation Report Exports Expose Private Comments and Author Information
Attackers can export evaluation reports to view private comments and author names, bypassing access controls in MISP cti-transmute.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73140?
CVE-2026-73140 is a medium-severity missing authorization vulnerability in MISP cti-transmute, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Affected versions of cti-transmute fail to apply comment-level access-control rules when generating evaluation report exports. Although normal comment retrieval filters comments according to conversion visibility, comment privacy, ownership, authorship, and administrative privileges, build_evaluation_report() previously included all evaluation comments without applying those rules.
Consequently, a user who was authorized to view a conversion could export its evaluation report as Markdown or PDF and obtain private evaluation comments that should only have been visible to the conversion owner, the comment author, or an administrator. The leaked report data also contained the comment author's name. The fix passes the requesting user into the report builder and filters every evaluation comment using the shared access.can_see_comment() authorization function.
Weakness: CWE-862
Which versions are affected by CVE-2026-73140?
How do I fix CVE-2026-73140?
No fix has been published for CVE-2026-73140 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73140 being exploited?
There is no known exploitation of CVE-2026-73140 in the wild and no public exploit code.
Sources
Also known as GHSA-vrrh-vgmq-m54x.