---
id: "CVE-2026-126570"
page: "https://infrastack.ai/live/CVE-2026-126570"
kind: "vulnerability"
aliases: ["CVE-2026-126570"]
title: "Padloc: SCIM token holders can pollute server-wide JavaScript object prototype"
severity: "high"
cvss: 7.6
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Padloc", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["other", "padloc", "scim", "self-hosted"]
not_affected_if: ["patched-4.3.1", "scim-disabled"]
published_at: "2026-11-11T03:16:51+00:00"
first_seen_at: "2026-11-11T03:25:00+00:00"
updated_at: "2026-11-11T03:26:22+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126570", "first_seen_at": "2026-11-11T03:25:00+00:00"}]
exploit_sources: []
---

# Padloc: SCIM token holders can pollute server-wide JavaScript object prototype

Link for people: https://infrastack.ai/live/CVE-2026-126570 (this .md is for agents)

Padloc 4.0.0 before 4.3.1 lets a holder of a SCIM token send crafted PATCH paths that modify Object.prototype in the shared server process. The polluted prototype disrupts requests for every other organization on that server.

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

## Affected

- vendor:Padloc affected range not listed fixed no fixed version listed

## How to check

- Check the Padloc server version; affected releases are `4.0.0` up to but not including `4.3.1`.
- Check whether SCIM provisioning is enabled and whether any SCIM tokens have been issued.

## Fix

- Padloc: move to `4.3.1` or later.

## Timeline

- 2026-11-11T03:25:00+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126570

## Documents

- [advisory] Vendor advisory: github.com https://github.com/padloc/padloc/security/advisories/GHSA-crhv-mjrg-8vwm
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/padloc-4.0.0-before-4.3.1-prototype-pollution-via-scim-patch-setpath
- [fix] Patch: github.com https://github.com/padloc/padloc/commit/7dd3d230ef299c71ac215c802600b5f2358f7ba3

## From the sources

Padloc 4.0.0 before 4.3.1 contains a prototype pollution vulnerability that allows SCIM token holders to modify Object.prototype by sending crafted SCIM PATCH paths to ScimServer._handleScimUsersPatch(). Attackers can supply paths like __proto__.x or constructor.prototype.x passed to setPath() to pollute the shared server process, disrupting requests for all other organizations.

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