What is CVE-2026-100685?

CVE-2026-100685 is a high-severity vulnerability in Budibase Server, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-09-26.

How severe is CVE-2026-100685?

High severity. CVSS v3 base score is 7.7 out of 10.

Auth bypass in Budibase Server

CVE-2026-100685

Budibase before 3.45.0 fails to properly scope the GET /api/chat-links endpoint by workspace, allowing builders to enumerate chat identity link records across all workspaces in a tenant. Attackers with builder access to a single workspace can retrieve sensitive chat identity linking data including user IDs and external chat service identifiers from other workspaces they have no permission to access.

Vulnerability class: Broken Access Control

Published 2026-09-26.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Budibase Server

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/Budibase/budibase/security/advisories/GHSA-76m3-47v8-p7h6 (vendor-advisory)
www.vulncheck.com/advisories/budibase-before-3.45.0-information-disclosure-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-100685?: CVE-2026-100685 is a high-severity vulnerability in Budibase Server, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-09-26.
How severe is CVE-2026-100685?: High severity. CVSS v3 base score is 7.7 out of 10.