Is this vulnerability remotely exploitable?

Yes. If an application exposes a web endpoint or service that accepts user input and then generates a PDF using jsPDF's `createAnnotation` with that data, an attacker can exploit it over the network by submitting crafted inputs.

What level of access does an attacker need?

The attacker needs the ability to influence the arguments passed into `createAnnotation`, typically by controlling form fields, API parameters, or stored content that the application later renders into PDFs.

What is the safest general fix pattern?

Constrain annotation parameters to strictly validated, typed formats (for example, numeric color arrays within expected ranges), and ensure that any value written into the PDF structure is properly encoded so that it cannot introduce new PDF tokens or objects.

Severity:

HIGH RISK

(8.1)

Improper Output Neutralization (CWE-116) in jsPDF createAnnotation API

CVE-2026-31898

Published:

Mar 17, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Improper Output Neutralization / Injection into Generated Documents

CWE:

CWE-116

Impact:

Arbitrary PDF Object Injection and Potential Script Execution

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Output Neutralization / Injection into Generated Documents

CWE:

CWE-116

Impact:

Arbitrary PDF Object Injection and Potential Script Execution

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

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Improper Output Neutralization (CWE-116) in jsPDF createAnnotation API

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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