---
title: "CVE-2026-100684: Budibase - Authentication Bypass"
description: "Budibase 3.41.0 before 3.45.0 contains an authentication bypass caused by improper validation of pending user invites in the OIDC/SSO login path, letting attackers asserting victim's invited email address inherit privileges, exploit requires attacker to register at a trusted IdP and assert victim's email."
url: https://panop.io/threat-heartbeat/CVE-2026-100684/
---

# CVE-2026-100684 Budibase - Authentication Bypass

Budibase 3.41.0 before 3.45.0 contains an authentication bypass caused by improper validation of pending user invites in the OIDC/SSO login path, letting attackers asserting victim's invited email address inherit privileges, exploit requires attacker to register at a trusted IdP and assert victim's email.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.33% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100684)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

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

Published

26 September 2026

Updated

15 October 2026

Weakness

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

## Vendor fix

Upgrade to version 3.45.0 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-2026-100684](https://nvd.nist.gov/vuln/detail/CVE-2026-100684)
- [https://github.com/Budibase/budibase/security/advisories/GHSA-35ch-57g2-3g98](https://github.com/Budibase/budibase/security/advisories/GHSA-35ch-57g2-3g98)
- [https://www.vulncheck.com/advisories/budibase-server-3.41.0-before-3.45.0-authentication-bypass-via-oidc](https://www.vulncheck.com/advisories/budibase-server-3.41.0-before-3.45.0-authentication-bypass-via-oidc)

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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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