CVE-2026-78204
Ghostwriter through 7.2.6 Missing Authorization on Report Template Lint Endpoints
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.
INFO
Published Date :
Aug. 24, 2026, 1:16 a.m.
Last Modified :
Oct. 12, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Implement per-object authorization for report template linting.
- Add ownership and client-scope checks.
- Override RoleBasedAccessControlMixin for these endpoints.
- Validate template access before linting.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78204.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78204 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78204
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-78204 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78204 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 12, 2026
Action Type Old Value New Value Added Translation Title: Ghostwriter de GhostManager, Description: Ghostwriter hasta la versión 7.2.6 no aplica autorización por objeto en sus puntos finales de lint de plantillas de informe. RoleBasedAccessControlMixin.test_func devuelve solo request.user.is_active a menos que una vista lo anule, y ni el punto final que aplica lint a una plantilla de informe ni el punto final que devuelve los resultados de lint almacenados proporcionan una anulación, por lo que cada uno resuelve un ReportTemplate a partir de una clave primaria proporcionada por el llamador sin verificación de propiedad o de alcance del cliente. Cualquier cuenta autenticada puede, por lo tanto, aplicar lint a una plantilla arbitraria, lo que sobrescribe el resultado de lint almacenado de esa plantilla, y puede leer los hallazgos devueltos, que enumeran los nombres de las variables de la plantilla y los errores del motor de plantillas y así revelan su estructura. Esto es distinto de la ruta de intercambio de plantillas: ese punto final autoriza el informe pero omite la verificación por plantilla, mientras que estos puntos finales omiten la autorización por completo y permanecen sin corregir. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added Reference https://github.com/geo-chen/oss/blob/main/Ghostwriter.md Added SSVC {'id': 'CVE-2026-78204', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-24T18:03:13.759294Z'} -
New CVE Received by [email protected]
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'GhostManager', 'product': 'Ghostwriter', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '7.2.6'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-862 Added Reference https://github.com/geo-chen/oss/blob/main/Ghostwriter.md Added Reference https://github.com/GhostManager/Ghostwriter Added Reference https://github.com/GhostManager/Ghostwriter/blob/v7.2.6/ghostwriter/api/utils.py#L470-L480 Added Reference https://www.vulncheck.com/advisories/ghostwriter-through-missing-authorization-on-report-template-lint-endpoints