CVE-2026-113600
Fat Free CRM before 0.26.0 IDOR via CommentsController update and destroy
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | fatfreecrm |
| Product | fat_free_crm |
| Published | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
fatfreecrm / fat_free_crm
0 < 0.26.0
References
github.com: https://github.com/fatfreecrm/fat_free_crm/issues/1650 github.com: https://github.com/fatfreecrm/fat_free_crm/commit/3c3199328dd10414b1f039ab8e4a82fe0f3baf87 github.com: https://github.com/fatfreecrm/fat_free_crm/releases/tag/v0.26.0 github.com: https://github.com/fatfreecrm/fat_free_crm/blob/v0.25.0/app/controllers/comments_controller.rb vulncheck.com: https://www.vulncheck.com/advisories/fat-free-crm-before-0.26.0-idor-via-commentscontroller-update-and-destroy
Credits
lighthousekeeper1212 🔍 leediay153 from Viettel Post