CVE WatchOct 7, 2026

CVE-2026-104978

Plane is an open-source project management tool. Prior to 1.4.0, Plane's project invitation list endpoint is accessible to any authenticated

CVSS

8.2

High

EPSS

0.3%

p20

KEV

—

Exploit Today

0-100

Published: Oct 5, 2026 · Last modified: Oct 7, 2026 · CWE-863

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-10-062026-10-21

Technical 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.

Official references

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