Plane is an open-source project management tool. Prior to 1.4.0, PageVersionEndpoint in apps/api/plane/app/views/page/version.py scopes page-version lookups by workspace and page identifiers but not by the project_id from the URL. ProjectPagePermission likewise derives the caller's role from the URL project while resolving the requested page workspace-wide, so a member of one project can use that project's identifier to read description_html for a public page in another project in the same workspace. The affected path is read-only and does not enable cross-project page modification.
This issue is fixed in version 1.4.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/makeplane/plane/commit/cfe951c8af41b0fcf1c792e5ad664d00f7770…
security-advisories@github.com
https://github.com/makeplane/plane/pull/9380
security-advisories@github.com
https://github.com/makeplane/plane/releases/tag/v1.4.0
security-advisories@github.com
https://github.com/makeplane/plane/security/advisories/GHSA-ghcr-frqr-6pqr
security-advisories@github.com