Medium 5.4Published Oct 20, 2026

CVE-2026-113600Fat Free CRM before 0.26.0 IDOR via CommentsController update and destroy

Updated under an hour ago (Oct 28, 2026, 4:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Fat Free CRM before 0.26.0 contains an insecure direct object reference vulnerability that allows authenticated users to modify or delete other users' comments because CommentsController#update and #destroy use an unscoped Comment.find without authorization checks. Attackers can send PUT or DELETE requests to /comments/:id with enumerable sequential IDs to edit or delete comments on contacts, accounts, leads, and opportunities owned by others.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 23, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

fatfreecrm fat_free_crm fatfreecrm:fat_free_crm (from the name)	before 0.26.0	CNA record

References

References

https://github.com/fatfreecrm/fat_free_crm/issues/1650	issue-tracking
https://github.com/fatfreecrm/fat_free_crm/commit/3c3199328dd10414b1f039ab8e4a82fe0f3baf87	patch
https://github.com/fatfreecrm/fat_free_crm/releases/tag/v0.26.0	release-notes
https://github.com/fatfreecrm/fat_free_crm/blob/v0.25.0/app/controllers/comments_controller.rb	technical-description
https://www.vulncheck.com/advisories/fat-free-crm-before-0.26.0-idor-via-commentscontroller-update-and-destroy	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.