Stirling-PDF 3.0.0 through 3.2.0 Authorization Bypass via Processing Folders

Advisories

Stirling-PDF 3.0.0 through 3.2.0 Authorization Bypass via Processing Folders

Severity: high
Date: 10/20/2026
Affecting: Stirling-PDF >= 3.0.0, <= 3.2.0
CVE: CVE-2026-113606
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
References: https://github.com/abraxas/stirling-storage-folder-idor
https://abraxaslabs.tech/research/stirling-storage-folder-idor
https://abraxaslabs.tech/research/stirling-pdf-3.2.0-leftovers
https://github.com/Stirling-Tools/Stirling-PDF/blob/v3.2.0/app/proprietary/src/main/java/stirling/software/proprietary/policy/config/FolderAccessGuard.java
https://github.com/Stirling-Tools/Stirling-PDF/blob/v3.2.0/app/proprietary/src/main/java/stirling/software/proprietary/policy/controller/ProcessingFolderController.java
Credit: Abraxas Labs
Description: Stirling-PDF 3.0.0 through 3.2.0 contains an authorization bypass vulnerability that allows authenticated users to access other users' stored files by pointing a processing folder at the server storage directory. Attackers can create a folder via POST /api/v1/processing-folders targeting storage/<victimUserId>, list files, and run pipelines to read, modify, or destroy victims' files.

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