CVE-2026-33437: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Stirling-Tools Stirling-PDF
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.
AI Analysis
Technical Summary
Stirling-PDF versions before 2.0.0 contain a stored cross-site scripting vulnerability in the Get Info workflow. The vulnerability arises because untrusted PDF Title and Author metadata are inserted into the summary-text element using innerHTML without proper neutralization. This flaw allows a malicious PDF to execute scripts in the context of the web application when the user triggers the Get Info action. The vulnerability is tracked as CWE-79 and has a CVSS 3.1 score of 8.1, indicating high impact on confidentiality and integrity. The issue is resolved in version 2.0.0.
Potential Impact
Successful exploitation can lead to execution of arbitrary scripts in the user's browser session when interacting with the vulnerable Get Info feature. This can result in unauthorized access to browser session data and modification of page content, impacting confidentiality and integrity. There is no indication of availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade Stirling-PDF to version 2.0.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is documented. Patch status is not explicitly stated but the fix is included in version 2.0.0.
CVE-2026-33437: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Stirling-Tools Stirling-PDF
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.
CVSS v3.1
Score 8.1high
Affected software
pkg:github/stirling-tools/Stirling-PDFRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Stirling-PDF versions before 2.0.0 contain a stored cross-site scripting vulnerability in the Get Info workflow. The vulnerability arises because untrusted PDF Title and Author metadata are inserted into the summary-text element using innerHTML without proper neutralization. This flaw allows a malicious PDF to execute scripts in the context of the web application when the user triggers the Get Info action. The vulnerability is tracked as CWE-79 and has a CVSS 3.1 score of 8.1, indicating high impact on confidentiality and integrity. The issue is resolved in version 2.0.0.
Potential Impact
Successful exploitation can lead to execution of arbitrary scripts in the user's browser session when interacting with the vulnerable Get Info feature. This can result in unauthorized access to browser session data and modification of page content, impacting confidentiality and integrity. There is no indication of availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade Stirling-PDF to version 2.0.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is documented. Patch status is not explicitly stated but the fix is included in version 2.0.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-19T18:45:22.437Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a834ee2bf8831d539567a8d
Added to database: 08/17/2026, 18:11:46 UTC
Last enriched: 08/17/2026, 18:26:13 UTC
Last updated: 08/17/2026, 23:45:48 UTC
Views: 6
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