Vulnerable Library - packages/webapp-2.4.3.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/dompurify/package.json
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Dependency |
Type |
Fixed in (packages/webapp version) |
Remediation Possible** |
| CVE-2026-0540 |
 Medium |
6.1 |
dompurify-3.3.1.tgz |
Transitive |
N/A* |
❌ |
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-0540
Vulnerable Library - dompurify-3.3.1.tgz
DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else usin
Library home page: https://registry.npmjs.org/dompurify/-/dompurify-3.3.1.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/dompurify/package.json
Dependency Hierarchy:
- packages/webapp-2.4.3.tgz (Root Library)
- posthog-js-1.335.2.tgz
- ❌ dompurify-3.3.1.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like 
in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2026-03-03
URL: CVE-2026-0540
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-v2wj-7wpq-c8vv
Release Date: 2026-03-03
Fix Resolution: dompurify - 3.3.2,dompurify - 2.5.9
Step up your Open Source Security Game with Mend here
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/dompurify/package.json
Vulnerabilities
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - dompurify-3.3.1.tgz
DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else usin
Library home page: https://registry.npmjs.org/dompurify/-/dompurify-3.3.1.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/dompurify/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like
in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2026-03-03
URL: CVE-2026-0540
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-v2wj-7wpq-c8vv
Release Date: 2026-03-03
Fix Resolution: dompurify - 3.3.2,dompurify - 2.5.9
Step up your Open Source Security Game with Mend here