CVE-2026-33437
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
Stirling-PDF before version 2.0.0 has a stored XSS vulnerability in the Get Info workflow in app/core/src/main/resources/templates/security/get-info-on-pdf.html. Untrusted PDF Title and Author metadata are inserted 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.
Risk Assessment
A user can be attacked by a malicious PDF file, potentially leading to session theft or page modification.
Recommendation
Upgrade Stirling-PDF to version 2.0.0 or later.
Other vulnerabilities in Stirling-PDF
See all- CVE-2026-57485High
Stirling-PDF is a locally hosted web application that facilitates various operations on PDF files. Prior to 2.9.0, the /api/v1/pipeline/handleData endpoint injects the STIRLING-PDF-BACKEND-API-USER API key into pipeline subrequests, allowing an authenticated ROLE_USER to retrieve the key through /api/v1/user/get-api-key, impersonate the internal service account, bypass normal rate limits, and access internal endpoints including /api/v1/info/requests/all and /api/v1/info/load/all. This issue is fixed in version 2.9.0.
- CVE-2026-71270High
Stirling-PDF's POST /api/v1/convert/url/pdf endpoint (ConvertWebsiteToPDF.java) was not updated with the CustomHtmlSanitizer/SsrfProtectionService SSRF protections that were added to three sibling conversion endpoints (html/pdf, file/pdf, markdown/pdf).
- CVE-2026-41580Medium
A vulnerability in Stirling-PDF before version 2.0.0 allowed JavaScript injection via PDF title and author metadata fields. An attacker can craft a malicious PDF that, when its info is viewed in the web interface, executes code in the victim's browser.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS