Auth bypass in Stirling-Tools Stirling-Pdf
CVE-2026-113606
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/abraxas/stirling-storage-folder-idor (technical-description, exploit)
- abraxaslabs.tech/research/stirling-storage-folder-idor (technical-description)
- abraxaslabs.tech/research/stirling-pdf-3.2.0-leftovers (technical-description)
- github.com/Stirling-Tools/Stirling-PDF/blob/v3.2.0/app/proprietary/src/main/jav… (technical-description)
- github.com/Stirling-Tools/Stirling-PDF/blob/v3.2.0/app/proprietary/src/main/jav… (technical-description)
- www.vulncheck.com/advisories/stirling-pdf-3.0.0-through-3.2.0-authorization-byp… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-113606?
- CVE-2026-113606 is a high-severity vulnerability in Stirling-Tools Stirling-Pdf, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-10-20.
- How severe is CVE-2026-113606?
- High severity. CVSS v3 base score is 7.1 out of 10.