---
canonical: "https://firewall.lpm.dev/npm/@immobiliarelabs/backstage-plugin-ldap-auth-backend"
markdown: "https://firewall.lpm.dev/npm/@immobiliarelabs/backstage-plugin-ldap-auth-backend/report.md"
package: "@immobiliarelabs/backstage-plugin-ldap-auth-backend"
report_status: "published"
title: "@immobiliarelabs/backstage-plugin-ldap-auth-backend@5.2.1 npm security report"
verdict: "malicious"
version: "5.2.1"
---

# @immobiliarelabs/backstage-plugin-ldap-auth-backend@5.2.1 npm security report

> **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document.

## Verdict summary
**Blocked by malware advisory** — OpenSSF/OSV malware advisory MAL-2026-6529 identifies this version as malicious and supplies the Firewall block.

- **Verdict:** Malicious
- **Product-default install policy:** Block
- **Firewall policy:** Trusted malware advisory block
- **Public report status:** Published
- **Threat category:** Malware
- **Selected version:** 5.2.1
- **Selected version is latest:** Yes
- **Analysis source:** OpenSSF/OSV Malicious Advisory (OpenSSF/OSV)

OpenSSF/OSV malware advisory MAL-2026-6529 identifies this version as malicious and supplies the Firewall block.

OpenSSF/OSV advisory MAL-2026-6529 confirms this npm version as malicious. The package ships a binding.gyp at the package root containing GYP command-expansion syntax (\`\<!(...)\`) in its sources/targets configuration (binding.gyp line 6). npm implicitly runs \`node-gyp rebuild\` whenever a binding.gyp is present — even with no declared install/postinstall script — and node-gyp evaluates \`\<!(...)\` as a shell command during the configure step...

## Latest scan
- **Scanner version:** external-osv-malicious-v1
- **Recorded final verdict:** Malicious
- **Recorded analysis confidence:** 100.0%
- **Started:** 2026-06-30T15:00:00.099Z
- **Finished:** 2026-06-30T15:00:00.099Z
- **Download time:** Not available
- **Static scan time:** Not available
- **AI review time:** Not available
- **Total time:** Not available

The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs.

## Security analysis

No additional public attack-surface or AI-review details are available.

## Affected versions and remediation

This report applies to @immobiliarelabs/backstage-plugin-ldap-auth-backend@5.2.1.

The same advisory and Firewall decision cover these 5 recorded versions: 1.1.3, 2.0.5, 3.0.2, 4.3.2, 5.2.1.

- Avoid installing @immobiliarelabs/backstage-plugin-ldap-auth-backend@5.2.1. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

## Public findings

### 1. High: Osv Malicious Advisory
- **Category:** External Intel
- **Confidence:** 100.0%

The package ships a binding.gyp at the package root containing GYP command-expansion syntax (\`\<!(...)\`) in its sources/targets configuration (binding.gyp line 6). npm implicitly runs \`node-gyp rebuild\` whenever a binding.gyp is present — even with no declared install/postinstall script — and node-gyp evaluates \`\<!(...)\` as a shell command during the configure step. This causes the embedded command to execute on the installing developer's or build system's machine on a default \`npm install\`, functionally equivalent to a malicious lifecycle hook. The package presents itself as a Backstage LDAP auth backend plugin, which has no legitimate need for a native build step or shell expansion in its build configuration. Stage-1 contextual tracing of the package contents was withheld by the model provider's safety filter, which engages specifically on content that reads as operational malware — a corroborating signal alongside the binding.gyp command-expansion finding.

## Dependencies and install lifecycle
- **Lifecycle scripts present:** No

- **Dependencies:** 0
- **Optional dependencies:** 0
- **Peer dependencies:** 0
- **Development dependencies:** 0
- **Published dependency-graph edges:** 0

## Package metadata
- **Package:** @immobiliarelabs/backstage-plugin-ldap-auth-backend
- **Ecosystem:** npm
- **Version:** 5.2.1
- **Version published:** Not available
- **Package first seen:** 2026-06-30T15:00:00.099Z
- **Package last seen:** 2026-06-30T15:00:00.099Z
- **Known versions:** 5
- **Latest version:** 5.2.1
- **Appeal under review:** No

## References
- [HTML security report](<https://firewall.lpm.dev/npm/@immobiliarelabs/backstage-plugin-ldap-auth-backend>)
- [OpenSSF/OSV advisory](<https://osv.dev/vulnerability/MAL-2026-6529>)
- [OpenSSF JSON](<https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@immobiliarelabs/backstage-plugin-ldap-auth-backend/MAL-2026-6529.json>)
- [PACKAGE](<https://www.npmjs.com/package/@immobiliarelabs/backstage-plugin-ldap-auth-backend/v/3.0.2>)
- [PACKAGE](<https://www.npmjs.com/package/@immobiliarelabs/backstage-plugin-ldap-auth-backend/v/2.0.5>)
- [PACKAGE](<https://www.npmjs.com/package/@immobiliarelabs/backstage-plugin-ldap-auth-backend/v/1.1.3>)
- [PACKAGE](<https://www.npmjs.com/package/@immobiliarelabs/backstage-plugin-ldap-auth-backend/v/5.2.1>)
- [PACKAGE](<https://www.npmjs.com/package/@immobiliarelabs/backstage-plugin-ldap-auth-backend/v/4.3.2>)