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Stirling-PDF CVE-2026-33437

| EUVDEUVD-2026-60320 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-08-17 GitHub_M
8.1
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
8.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
vuln.today AI
8.1 HIGH

Attacker supplies malicious PDF externally with no instance privileges; victim must click 'Get Info'; session data fully exposed but no availability impact and scope remains unchanged.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

4
Patch available
Aug 17, 2026 - 19:18 EUVD
Source Code Evidence Fetched
Aug 17, 2026 - 18:38 vuln.today
Analysis Generated
Aug 17, 2026 - 18:38 vuln.today
CVE Published
Aug 17, 2026 - 17:58 cve.org
HIGH 8.1

DescriptionCVE.org

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.

AnalysisAI

Stored cross-site scripting in Stirling-PDF prior to version 2.0.0 allows an attacker to embed JavaScript payloads inside PDF metadata fields (Title or Author) that execute in a victim's browser session when the user triggers the 'Get Info' workflow. The vulnerable template at get-info-on-pdf.html injects unsanitized metadata directly into the DOM via innerHTML, enabling session token theft and arbitrary page content manipulation against any user who processes a crafted PDF on a shared instance. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires three specific conditions to align: the Stirling-PDF instance must be running a version prior to 2.0.0; the attacker must be able to introduce a crafted PDF (with a malicious payload in the Title or Author metadata) into the system, either by uploading it directly or by inducing a victim to upload it; and the victim must actively click 'Get Info' on that specific PDF file within the Stirling-PDF UI. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 8.1 score is consistent with the mechanics: network delivery (AV:N), low complexity (AC:L), no attacker-side privileges required (PR:N), required victim interaction (UI:R), unchanged scope (S:U), and high confidentiality and integrity impact reflecting session compromise and DOM manipulation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch: version 2.0.0. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: audit all Stirling-PDF instances to identify current versions and determine which systems process untrusted PDFs. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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Stored cross-site scripting in Stirling-PDF's /get-info-on-pdf endpoint allows attacker-controlled JavaScript to execute

CVE-2026-34071 MEDIUM
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Stirling-PDF version 2.7.3 fails to sanitize HTML content from email bodies in the /api/v1/convert/eml/pdf endpoint when

CVE-2026-33436 LOW
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Reflected cross-site scripting (XSS) in Stirling-PDF versions before 2.0.0 allows unauthenticated remote attackers to ex

CVE-2025-55151 HIGH
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Stirling-PDF is a locally hosted web application that performs various operations on PDF files. Rated high severity (CVS

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CVE-2026-33437 vulnerability details – vuln.today

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