CVE-2026-78203 Ghostwriter before 7.1.2 Cross-Client Report Template Disclosure via Unauthorized Template Swap
Attackers can swap report templates to disclose sensitive client-specific content from other clients due to missing ownership validation.
- 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-2026-78203?
CVE-2026-78203 is a high-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 before 7.1.2 fails to validate template ownership in the report template swap endpoint, allowing attackers to attach client-scoped templates from other clients to their own reports. Attackers can exploit sequential template primary keys to enumerate and attach foreign templates, then generate reports to disclose template contents including letterhead, boilerplate, and methodology text.
Weakness: CWE-639
Which versions are affected by CVE-2026-78203?
How do I fix CVE-2026-78203?
No fix has been published for CVE-2026-78203 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-2026-78203 being exploited?
There is no known exploitation of CVE-2026-78203 in the wild and no public exploit code.
Sources
Also known as GHSA-r3hm-6h2p-vf9v.