CVE-2026-72759 cti-transmute Conversion History Authorization Bypass Leads to Sensitive Data Disclosure After Conversion Deletion
Attackers can view sensitive data from deleted conversions due to an incomplete authorization check in the MISP cti-transmute history endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72759?
CVE-2026-72759 is a medium-severity missing authorization vulnerability in misp cti-transmute, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In affected versions of MISP cti-transmute, the conversion-history details endpoint performs an incomplete authorization check. When a history record references a deleted conversion, the associated conversion lookup returns None. The previous logic only denied access when the conversion object existed and the visibility check failed. As a result, deleted conversions bypassed the authorization check and their retained history input/output could be disclosed to a user able to request the corresponding history entry. The July 22, 2026 commit changes the logic to deny access whenever the conversion is missing or the requester lacks permission
Weakness: CWE-862
Which versions are affected by CVE-2026-72759?
How do I fix CVE-2026-72759?
No fix has been published for CVE-2026-72759 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-2026-72759 being exploited?
There is no known exploitation of CVE-2026-72759 in the wild and no public exploit code.
Sources
Also known as GHSA-9p5q-96wv-4xvh.