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  4. CVE 2026 33437 stirling pdf stored xss in info summary
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Back to active CVEs
High · CVSS 8.1CVE-2026-33437

Stirling PDF: Stored XSS in Info Summary

Answer in brief

CVE-2026-33437 records a High severity (CVSS 8.1) vulnerability in Stirling PDF: Stored XSS in Info Summary. The current sources do not mark it as known exploited. The current feed maps Stirling-Tools/Stirling-PDF (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 17, 2026Updated Sep 18, 2026Source checked Oct 2, 2026First seen by HOL Aug 17, 2026Material review Sep 18, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Stirling-Tools/Stirling-PDF (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Stirling-Tools/Stirling-PDFgeneric<2.0.02.0.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Stirling-Tools/Stirling-PDF.
  2. 2Review the reported fix. Update Stirling-Tools/Stirling-PDF to 2.0.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 17, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 17, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Sakai Conversations has a Stored XSS IssueAlso CWE-79
  • GetSimple CMS: Authenticated Stored XSS in backup viewer (backup-edit.php) via output decoding of page meta fields and contentAlso CWE-79
  • GetSimple CMS: Stored Cross-Site Scripting (XSS) via the "title" parameter in admin/components.phpAlso CWE-79
  • Office-PowerPoint-MCP-Server through 2.0.7 Path Traversal via save_presentation and manage_imageSame generic ecosystem
  • Wormhole.app SSRFSame generic ecosystem
  • Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71Same generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 2, 2026
References
2 linked sources
Open source record