GhostManager Ghostwriter up to 7.2.6 Report Template Lint Endpoint RoleBasedAccessControlMixin.test_func improper authorization

Summaryinfo

A vulnerability was found in GhostManager Ghostwriter up to 7.2.6 and classified as critical. Affected is the function RoleBasedAccessControlMixin.test_func of the component Report Template Lint Endpoint. Such manipulation leads to improper authorization. This vulnerability is referenced as CVE-2026-78204. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GhostManager Ghostwriter up to 7.2.6. Affected by this issue is the function RoleBasedAccessControlMixin.test_func of the component Report Template Lint Endpoint. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-78204 since 08/24/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/24/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-64679). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• GhostManager

Name

• Ghostwriter

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6

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Once again VulDB remains the best source for vulnerability data.

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