---
title: "CVE-2026-105640: Plane - Authentication Bypass"
description: "Plane prior to 1.4.0 contains an authentication bypass caused by trusting unverified email addresses from Gitea and self-managed GitLab OAuth without ownership verification, letting attackers log in as victims, exploit requires unverified OAuth email."
url: https://panop.io/threat-heartbeat/CVE-2026-105640/
---

# CVE-2026-105640 Plane - Authentication Bypass

Plane prior to 1.4.0 contains an authentication bypass caused by trusting unverified email addresses from Gitea and self-managed GitLab OAuth without ownership verification, letting attackers log in as victims, exploit requires unverified OAuth email.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.38% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105640)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

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

Published

5 October 2026

Updated

15 October 2026

Weakness

[CWE-287](https://cwe.mitre.org/data/definitions/287.html)

## Vendor fix

Update to version 1.4.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105640](https://nvd.nist.gov/vuln/detail/CVE-2026-105640)
- [https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2](https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2)
- [https://github.com/makeplane/plane/pull/9289](https://github.com/makeplane/plane/pull/9289)
- [https://github.com/makeplane/plane/releases/tag/v1.4.0](https://github.com/makeplane/plane/releases/tag/v1.4.0)
- [https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365](https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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