jsondiffpatch is vulnerable to Cross-site Scripting (XSS) via HtmlFormatter::nodeBegin
Vulnerability in jsondiffpatch
Versions of jsondiffpatch prior to 0.7.2 are vulnerable to Cross-site Scripting (XSS) in the HtmlFormatter (HtmlFormatter::nodeBegin). When diffs are rendered to HTML using the built-in formatter, untrusted payloads can inject scripts and execute in the context of a consuming web page.
Affected versions: >= 0, < 0.7.2 Patched version: 0.7.2
Remediation
Upgrade to jsondiffpatch 0.7.2 or later. The fix hardens the HTML formatter to avoid script injection.
Workarounds Avoid using the HTML formatter on untrusted diffs, or sanitize/escape the rendered output.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | jsondiffpatch | < 0.7.2 | 0.7.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-9910
- https://github.com/benjamine/jsondiffpatch/issues/383
- https://github.com/benjamine/jsondiffpatch/commit/0e374b5dd8d7879b329a9fc18affbd46ad50dd14
- https://benjamine.github.io/jsondiffpatch/index.html
- https://github.com/benjamine/jsondiffpatch
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-12549277
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-12549276
- https://security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-10369031
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- npm
- Package
jsondiffpatch- Disclosed
- 11.09.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-33vc-wfww-vjfv - CC BY 4.0
Vulnerability history: jsondiffpatch
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 09.2025 05.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2025: 1
- 2026: 1
-
jsondiffpatch is vulnerable to Cross-site Scripting (XSS) via HtmlFormatter::nodeBegin this entry
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