CVE-2026-86417 MISP Dashboard Template REST API Exposes Template Owner Email Addresses to Unauthorized Users
Authenticated users can retrieve template owners' email addresses via the REST API, bypassing intended visibility restrictions in MISP.
- 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-2026-86417?
CVE-2026-86417 is a medium-severity vulnerability in Misp-Project Misp, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Affected versions of MISP inconsistently enforced email-address visibility in DashboardsController::listTemplates().
The query always fetched User.email, while redaction happened only inside the non-REST rendering branch. As a result, the same authenticated user who saw redacted data in the normal HTML interface could request the REST/JSON representation and receive template owners’ email addresses without the intended privilege check.
The fix moves the decision to a centralized User::canSeeEmails() authorization helper. Email addresses are now fetched only when the requester is a site administrator or the instance explicitly enables Security.disclose_user_emails. The same helper is also reused by other dashboard widgets to keep email-disclosure policy consistent.
Version affected: ≤2.5.45
Which versions are affected by CVE-2026-86417?
It affects 1 product.
Products include Misp-Project Misp.
How do I fix CVE-2026-86417?
No fix has been published for CVE-2026-86417 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86417 being exploited?
There is no known exploitation of CVE-2026-86417 in the wild and no public exploit code.
Other vulnerabilities in Misp-Project Misp
Sources
Also known as GHSA-82w9-ppqv-p5c6.