CVE-2026-113606: Stirling-PDF 3.0.0 through 3.2.0 Authorization Bypass via Processing Folders

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-20 · updated 2026-10-23
Weakness: CWE-639

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.

Affected products

Stirling-Tools Stirling-PDF: from 3.0.0 through 3.2.0

References

https://abraxaslabs.tech/research/stirling-pdf-3.2.0-leftovers
https://abraxaslabs.tech/research/stirling-storage-folder-idor
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
https://github.com/abraxas/stirling-storage-folder-idor
https://www.vulncheck.com/advisories/stirling-pdf-3.0.0-through-3.2.0-authorization-bypass-via-processing-folders

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