# CVE-2026-100884: Krayin laravel-crm insecure direct object reference in attachment download

Source: https://junglewise.ai/threats/cve-2026-100884-a-vulnerability-has-been-found-in-krayin-laravel-crm-up-to-2-2-5  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-27. Updated: 2026-09-27  
License: CC BY 4.0 with a link back

CVE-2026-100884 · Severity: medium · CVSS 4.3 · Published 2026-09-27

Krayin laravel-crm is an open-source CRM platform for managing customer relationships and sales pipelines. An authenticated attacker with limited permissions can download email attachments belonging to other users by manipulating object identifiers, bypassing authorization checks. This allows unauthorized access to potentially sensitive business documents and communications.

Technologies: [Krayin Laravel-CRM](https://junglewise.ai/threats/technologies/laravel-crm). Vendors: [Krayin](https://junglewise.ai/threats/vendors/krayin).

## Quick answers

**Is CVE-2026-100884 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100884 being exploited in the wild.

**How severe is CVE-2026-100884?** Medium severity, with a CVSS score of 4.3, published 27 September 2026.

**Which products and versions are affected?** Krayin Laravel-CRM up to 2.2.5.

**Is there a fix for CVE-2026-100884?** A patch was published on 2026-09-27: Fixed in version 2.2.6 (commit 13d6988cda8d69ece45ee1890effc90a7f21cdc1) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100884 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-100884?** Check whether you run Krayin Laravel-CRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an insecure direct object reference (IDOR) in the attachment-download endpoint caused by missing object-level authorization checks. An authenticated user can directly access the Storage::download function with an arbitrary attachment ID, with the ACL middleware unable to properly validate permissions due to an AJAX header bypass and missing authorization mapping. The vulnerability affects versions up to 2.2.5 and is fixed in version 2.2.6.

## Affected products

- Krayin laravel-crm up to 2.2.5

## Timeline

- 2026-09-27: disclosed: Vulnerability disclosed publicly
- 2026-09-27: patched: Fixed in version 2.2.6 (commit 13d6988cda8d69ece45ee1890effc90a7f21cdc1)

## References

- [https://github.com/carlosalbertotuma/advisory/blob/main/advisory-06-IDOR-Email-Attachment%20Download.md](https://github.com/carlosalbertotuma/advisory/blob/main/advisory-06-IDOR-Email-Attachment%20Download.md)
- [https://github.com/krayin/laravel-crm/](https://github.com/krayin/laravel-crm/)

## Related threats

- [Krayin laravel-crm authentication bypass in installer](https://junglewise.ai/threats/cve-2026-100885-a-vulnerability-was-found-in-krayin-laravel-crm-up-to-2-2-4-this)
- [Krayin laravel-crm improper access control in ACL configuration](https://junglewise.ai/threats/cve-2026-100883-a-flaw-has-been-found-in-krayin-laravel-crm-up-to-2-2-5-the)
- [Krayin Laravel-CRM privilege escalation in user management](https://junglewise.ai/threats/cve-2026-97895-a-vulnerability-was-determined-in-krayin-laravel-crm-up-to-2-2-5)