PT-2026-41421 · Npm · Jsondiffpatch

Yuki Matsuhashi · CVE-2026-8656 · Published 2026-05-16 · Updated 2026-05-17

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions jsondiffpatch versions prior to 0.7.6

Description Improper sanitization of JSON values and property names in the annotated formatter allows for Cross-site Scripting (XSS). This occurs when an application compares untrusted JSON or object data and renders the annotated formatter output in the Document Object Model (DOM), enabling the browser to interpret attacker-controlled HTML.

Recommendations Update to version 0.7.6 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8656

Affected Products

Jsondiffpatch

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8656.json · Exploit
• 🔥 https://gist.github.com/yuki-matsuhashi/72ed072d919f3c52adba298faa6a7da5 · Exploit
• https://osv.dev/vulnerability/CVE-2026-8656 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8656 · Security Note
• https://github.com/benjamine/jsondiffpatch/commit/232338b34c4653148ca2f44e897a765b72c8c98f · Note
• https://t.me/CVEtracker/53994 · Telegram Post
• https://security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16635946 · Note
• https://twitter.com/VulmonFeeds/status/2055538984193798326 · Twitter Post
• https://t.me/cveNotify/163740 · Telegram Post
• https://twitter.com/infoflowcloud/status/2055867615797527023 · Twitter Post
• https://twitter.com/CVEnew/status/2055866608778670557 · Twitter Post