Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Cross-site Scripting (XSS) via the annotated formatter due to improper sanitization of JSON values and property names. If an application compares untrusted JSON/object data and renders annotated formatter output in the DOM, attacker-controlled HTML can be interpreted by the browser, resulting in XSS.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://www.spirityenterprise.com/pentest spirity
https://gist.github.com/yuki-matsuhashi/72ed072d919f3c52adba298faa6a7da5 cve-icon cve-icon
https://github.com/benjamine/jsondiffpatch/commit/232338b34c4653148ca2f44e897a765b72c8c98f cve-icon cve-icon
https://security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16635946 cve-icon cve-icon
History

Sat, 16 May 2026 06:45:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting via jsondiffpatch Annotated Formatter

Sat, 16 May 2026 05:30:00 +0000

Type Values Removed Values Added
Description Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Cross-site Scripting (XSS) via the annotated formatter due to improper sanitization of JSON values and property names. If an application compares untrusted JSON/object data and renders annotated formatter output in the DOM, attacker-controlled HTML can be interpreted by the browser, resulting in XSS.
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-05-16T05:00:04.462Z

Reserved: 2026-05-15T06:27:53.788Z

Link: CVE-2026-8656

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-16T06:16:18.347

Modified: 2026-05-16T06:16:18.347

Link: CVE-2026-8656

cve-icon Redhat

No data.