Vulnerability · Published Aug 17, 2026 · Assigned by GitHub_M
CVE-2026-33437Stirling PDF: Stored XSS in Info Summary
High 8.1
In plain English
A high-severity cross-site scripting in Stirling-PDF from Stirling-Tools. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official description
Stirling-PDF is a locally hosted web application that facilitates various operations on PDF files. Prior to 2.0.0, the Get Info workflow in app/core/src/main/resources/templates/security/get-info-on-pdf.html inserts untrusted PDF Title and Author metadata into the summary-text element with innerHTML, allowing a malicious PDF to execute stored cross-site scripting when a user clicks Get Info and to access browser-session data or modify page content. This issue is fixed in version 2.0.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Stirling-Tools | Stirling-PDF | < 2.0.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N