Description
Plane is an open-source project management tool. Prior to 1.4.0, an authenticated low-privilege workspace member, including a Guest, can upload an image/svg+xml file as a generic or issue attachment. The file retains the attacker-controlled Content-Type, and the asset-download endpoint creates a presigned URL with Content-Disposition: inline. In the default self-hosted MinIO deployment, the asset URL is served from the same origin as the Plane application, allowing embedded SVG JavaScript to execute in the application's security context. A victim, including a workspace administrator, who opens the link can have the session compromised through stored XSS, leading to account takeover. This issue is fixed in 1.4.0.
Published: 2026-10-05
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Mon, 05 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Makeplane
Makeplane plane
Vendors & Products Makeplane
Makeplane plane

Mon, 05 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description Plane is an open-source project management tool. Prior to 1.4.0, an authenticated low-privilege workspace member, including a Guest, can upload an image/svg+xml file as a generic or issue attachment. The file retains the attacker-controlled Content-Type, and the asset-download endpoint creates a presigned URL with Content-Disposition: inline. In the default self-hosted MinIO deployment, the asset URL is served from the same origin as the Plane application, allowing embedded SVG JavaScript to execute in the application's security context. A victim, including a workspace administrator, who opens the link can have the session compromised through stored XSS, leading to account takeover. This issue is fixed in 1.4.0.
Title Plane: Stored XSS via SVG attachment served inline on the application origin (account takeover)
Weaknesses CWE-434
CWE-616
CWE-79
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-05T18:41:01.196Z

Reserved: 2026-10-05T16:40:39.611Z

Link: CVE-2026-105630

cve-icon Vulnrichment

Updated: 2026-10-05T18:40:53.374Z

cve-icon NVD

Status : Deferred

Published: 2026-10-05T18:17:36.250

Modified: 2026-10-05T19:17:17.093

Link: CVE-2026-105630

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T19:30:20Z

Weaknesses
  • CWE-434

    Unrestricted Upload of File with Dangerous Type

  • CWE-616

    Incomplete Identification of Uploaded File Variables (PHP)

  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')