CVE-2026-104978

8.2 HIGHpublic exploit available

Published 2026-10-05 · Updated 2026-10-07

AI risk analysis

Summary: The flaw allows any authenticated user to join a project by knowing the workspace slug and project ID, and an attacker can register an account without mailbox verification to accept the invitation, gaining unauthorized access to the project.
Exploitability: Exploitation is moderately easy as it requires knowledge of the workspace slug and project ID, and the attacker must register an account without mailbox verification.
Blast radius: If exploited, the attacker can join the target workspace and project, potentially leading to data exposure or manipulation.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to version 1.4.0 or later.

auth-bypasswebproject-management

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

Plane is an open-source project management tool. Prior to 1.4.0, Plane's project invitation list endpoint is accessible to any authenticated user who knows the workspace slug and project ID, while the public project invitation join endpoint accepts an invitation based only on a submitted email address. When a pending invitation targets an email address that has not registered with Plane, an attacker can enumerate the invitation, register an account using the invited email without mailbox verification, and accept the invitation. The attacker-controlled account is then added to the target workspace and project. This issue is fixed in 1.4.0.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Weaknesses

CWE-863

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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