Fat Free CRM vulnerable to Remote Denial of Service via Tasks endpoint

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

• CVE-2022-39281: 1.78% estimated exploitation activity in the next 30 days; percentile 78.31 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact An authenticated user can perform a remote Denial of Service attack against Fat Free CRM. This vulnerability has been assigned the CVE identifier: CVE-2022-39281 Affected versions: All Not affected: None Fixed versions: 0.20.1 All users running an affected release should either upgrade or apply the patch immediately. Releases Fixed versions: 0.20.1 and above Patches If you are unable to upgrade immediately, you should apply the following patch. Credits Thanks to @p- for reporting this and working with us to responsibly disclose this vulnerability. Further information If you have any questions or comments about this advisory, please Open an issue in GitHub Issue Tracker

Published by the source

7 Oct 2022, 21:19 UTC

Last modified by the source

31 Jan 2023, 05:08 UTC

Source last checked

26 Oct 2026, 15:44 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-p75c-5x3h-cxcg

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# Patch Next advisory brief: CVE-2022-39281

Advisory: Fat Free CRM vulnerable to Remote Denial of Service via Tasks endpoint
IDs: CVE-2022-39281, GHSA-p75c-5x3h-cxcg
Record: https://patchnext.com/advisories/cve-2022-39281 (revision 1, source checked 26 Oct 2026, 15:44 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: fat_free_crm 0.20.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- RubyGems fat_free_crm: affected < 0.20.1; fixed in 0.20.1

## Suggested inspection (read-only)
- RubyGems fat_free_crm: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on fat_free_crm.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-p75c-5x3h-cxcg (GitHub-reviewed advisory GHSA-p75c-5x3h-cxcg lists affected ranges: RubyGems fat_free_crm >=0 <0.20.1)

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