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CVE-2026-8656

6.1 · MEDIUM

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.

Published May 16, 2026CWE-79EPSS 0.33%

Overview

CVE-2026-8656 is a medium-severity vulnerability. It was published on May 16, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgist.github.com/yuki-matsuhashi/72ed072d919f3c52adba298faa6a7da5GitHubgithub.com/benjamine/jsondiffpatch/commit/232338b34c4653148ca2f44e897a765b72c8c98fRefsecurity.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16635946GitHubgist.github.com/yuki-matsuhashi/72ed072d919f3c52adba298faa6a7da5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8656?

CVE-2026-8656 is a medium-severity vulnerability. It was published on May 16, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-8656?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-8656?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8656?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8656 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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