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CVE-2026-33437— Stirling PDF: Stored XSS in Info Summary

Quick assessment

Affected
Stirling-Tools Stirling-PDF
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Stirling-Tools Stirling-PDF是Stirling-Tools的一款信息化产品。 Stirling Tools Stirling PDF 2.0.0之前版本存在跨站脚本漏洞，该漏洞源于Get Info工作流将不受信任的PDF标题和作者元数据插入到summary-text元素中，可能导致存储型跨站脚本攻击，访问浏览器会话数据或修改页面内容。

CVSS 8.1 · High EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
Stirling-Tools Stirling-PDF < 2.0.0 affected
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I. Basic Information for CVE-2026-33437

Vulnerability Information
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Vulnerability Title
Stirling PDF: Stored XSS in Info Summary
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Stirling Tools Stirling PDF 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Stirling-Tools Stirling-PDF是Stirling-Tools的一款信息化产品。 Stirling Tools Stirling PDF 2.0.0之前版本存在跨站脚本漏洞，该漏洞源于Get Info工作流将不受信任的PDF标题和作者元数据插入到summary-text元素中，可能导致存储型跨站脚本攻击，访问浏览器会话数据或修改页面内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Stirling-Tools Stirling-PDF < 2.0.0 -

II. Public POCs for CVE-2026-33437

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5357 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-33437

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Vendor Advisories for CVE-2026-33437 (1)

Vendor Pages for CVE-2026-33437 (1)

IV. Related Vulnerabilities

Same product: Stirling-PDF
Same vendor: Stirling-Tools
Same weakness: CWE-79

V. Comments for CVE-2026-33437

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