CVE-2026-78204 Ghostwriter through 7.2.6 Missing Authorization on Report Template Lint Endpoints
Authenticated users can access and modify arbitrary report templates due to missing per-object authorization checks on lint endpoints.
- 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-2026-78204?
CVE-2026-78204 is a medium-severity missing authorization vulnerability in GhostManager Ghostwriter, published on 24 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Ghostwriter through 7.2.6 does not apply per-object authorization on its report template lint endpoints. RoleBasedAccessControlMixin.test_func returns only request.user.is_active unless a view overrides it, and neither the endpoint that lints a report template nor the endpoint that returns stored lint results provides an override, so each resolves a ReportTemplate from a caller-supplied primary key with no ownership or client-scope check. Any authenticated account can therefore lint an arbitrary template, which overwrites that template's stored lint result, and can read the returned findings, which enumerate the template's variable names and template-engine errors and so disclose its structure. This is distinct from the template swap path: that endpoint authorizes the report but omits the per-template check, whereas these endpoints omit authorization entirely and remain unfixed.
Weakness: CWE-862
Which versions are affected by CVE-2026-78204?
How do I fix CVE-2026-78204?
No fix has been published for CVE-2026-78204 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-2026-78204 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78204 exists.
Sources
Also known as GHSA-62c9-3hw5-37qf.