SEPTEMBER 17, 2026
Live Feed
Back to database
Case File

CVE-2026-86285

MEDIUM · CVSS 4.3 EPSS 0.22% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-07 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A vulnerability in the Attachment Edit Endpoint of BookStack versions up to 26.05.2 allows for improper access controls due to manipulation of the argument ID in the AttachmentController::getUpdateForm function. This weakness can be exploited remotely, potentially leading to unauthorized access to sensitive attachments. Organizations using affected versions should prioritize applying the provided patch to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-86285
Severity
MEDIUM
CVSS
4.3
EPSS
0.22%

Original NVD Description

A vulnerability was detected in BookStack up to 26.05.2. Affected by this issue is the function AttachmentController::getUpdateForm of the file app/Uploads/Controllers/AttachmentController.php of the component Attachment Edit Endpoint. The manipulation of the argument ID results in improper access controls. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as 4e406c41c4c8060a5795e74c66fb96362e54f400. It is advisable to implement a patch to correct this issue.