---
id: "CVE-2026-121454"
kind: "vulnerability"
aliases: ["CVE-2026-121454"]
title: "Padloc: SCIM endpoint leaks user and group directory to unauthenticated callers"
severity: "medium"
cvss: 6.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["other", "padloc", "scim", "self-hosted"]
not_affected_if: ["scim-disabled"]
published_at: "2026-11-03T16:17:24+00:00"
first_seen_at: "2026-11-03T16:21:43+00:00"
updated_at: "2026-11-03T16:24:10+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121454", "first_seen_at": "2026-11-03T16:21:43+00:00"}]
---

# Padloc: SCIM endpoint leaks user and group directory to unauthenticated callers

Padloc's SCIM server accepts any non-empty bearer token, so an unauthenticated attacker can query the Users and Groups endpoints. Knowing an organization id is enough to retrieve usernames, emails, names, externalIds and group memberships.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the self-hosted Padloc server is running a version at or below `4.3.0`
- Check whether SCIM provisioning is enabled for your Padloc organization

## Fix

- Padloc: unknown (the sources reference a patch on github.com but do not state the fixed version)

## Timeline

- 2026-11-03T16:21:43+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121454

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/padloc-through-4.3.0-missing-scim-token-validation-via-scim-get-requests
- [fix] Patch: github.com https://github.com/padloc/padloc/commit/90dda7c6f417b28bee86ec60eff532eb18870125

## From the sources

Padloc through 4.3.0 contains a missing authentication vulnerability in ScimServer._handleScimGet() that allows unauthenticated attackers to read SCIM directories by sending any non-empty bearer token. Attackers who know an organization id can query the Users and Groups SCIM endpoints to retrieve provisioned usernames, emails, names, externalIds, and group memberships.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_