GHSA-p75c-5x3h-cxcg
MEDIUMFat Free CRM vulnerable to Remote Denial of Service via Tasks endpoint
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
fat_free_crmReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
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.
diff --git a/app/models/polymorphic/task.rb b/app/models/polymorphic/task.rb
index d3d5c32c..7cdb24d6 100644
--- a/app/models/polymorphic/task.rb
+++ b/app/models/polymorphic/task.rb
@@ -189,6 +189,7 @@ class Task < ActiveRecord::Base
#----------------------------------------------------------------------------
def self.bucket_empty?(bucket, user, view = "pending")
return false if bucket.blank? || !ALLOWED_VIEWS.include?(view)
+ return false unless Setting.task_bucket.map(&:to_s).include?(bucket.to_s)
if view == "assigned"
assigned_by(user).send(bucket).pending.count
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
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | fat_free_crm | all versions | 0.20.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for fat_free_crm. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update fat_free_crm to 0.20.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p75c-5x3h-cxcg is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-p75c-5x3h-cxcg is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-p75c-5x3h-cxcg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-p75c-5x3h-cxcg in your dependencies?
O3 detects GHSA-p75c-5x3h-cxcg across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.