Path Traversal in Stirling Pdf
CVE-2026-27625
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.001
Affected products
- Stirling Pdf
- Stirling-Tools Stirling-Pdf — versions < 2.5.2
Weakness classification (CWE)
References
- github.com/Stirling-Tools/Stirling-PDF/security/advisories/GHSA-wccq-mg6x-2w22 (Exploit, Vendor Advisory)
- github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.5.2 (Product, Patch)
Frequently asked questions
- What is CVE-2026-27625?
- CVE-2026-27625 is a high-severity vulnerability in Stirling Pdf, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-03-20.
- How severe is CVE-2026-27625?
- High severity. CVSS v3 base score is 8.1 out of 10.