CVE-2026-33436 | Stirling-Tools Stirling-PDF up to 1.x PDF File information disclosure (GHSA-q5j3-4m5w-wp75)

VDB-358125 · CVE-2026-33436 · GHSA-Q5J3-4M5W-WP75 STIRLING-TOOLS STIRLING-PDF UP TO 1.X PDF FILE INFORMATION DISCLOSURE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.0 $0-$5k 1.39+ Summaryinfo A vulnerability was found in Stirling-Tools Stirling-PDF up to 1.x. It has been classified as problematic. This impacts an unknown function of the component PDF File Handler. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2026-33436. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in Stirling-Tools Stirling-PDF up to 1.x. It has been classified as problematic. This affects an unknown code block of the component PDF File Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is: Stirling-PDF is a locally hosted web application that facilitates various operations on PDF files. In versions prior to 2.0.0, file upload endpoints render user-supplied filenames directly into HTML using unsafe methods like innerHTML without sanitization. An attacker can craft a file with a malicious filename containing JavaScript that executes in the uploading user's browser context, resulting in reflected XSS. The issue affects numerous upload endpoints across the application. The issue has been fixed in version 2.0.0. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-33436 since 03/19/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue. Upgrading to version 2.0.0 eliminates this vulnerability. Productinfo Vendor Stirling-Tools Name Stirling-PDF Version 1.x Website Product: https://github.com/Stirling-Tools/Stirling-PDF/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.1 VulDB Meta Temp Score: 3.0 VulDB Base Score: 3.1 VulDB Temp Score: 3.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 3.1 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Information disclosure CWE: CWE-200 / CWE-284 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Stirling-PDF 2.0.0 Timelineinfo 03/19/2026 CVE reserved 04/17/2026 +28 days Advisory disclosed 04/17/2026 +0 days VulDB entry created 04/17/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-q5j3-4m5w-wp75 Status: Confirmed CVE: CVE-2026-33436 (🔒) GCVE (CVE): GCVE-0-2026-33436 GCVE (VulDB): GCVE-100-358125 Entryinfo Created: 04/17/2026 23:50 Changes: 04/17/2026 23:50 (65) Complete: 🔍 Cache ID: 99:0E2:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸