CVE-2026-27625
Stirling-PDF Zip Slip: Arbitrary File Write via Path Traversal in Markdown-to-PDF ZIP Extraction
CVSS Score
8.1
EPSS Score
0.1%
EPSS Percentile
17th
Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary working directory, leading to arbitrary file write with the privileges of the Stirling-PDF process user (stirlingpdfuser). This can overwrite writable files and compromise data integrity, with further impact depending on writable paths. The issue was fixed in version 2.5.2.
| CWE | CWE-22 CWE-23 |
| Vendor | stirling-tools |
| Product | stirling-pdf |
| Published | Mar 20, 2026 |
| Last Updated | Mar 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for stirling-tools stirling-pdf
Be the first to know when new high vulnerabilities affecting stirling-tools stirling-pdf are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
Stirling-Tools / Stirling-PDF
< 2.5.2