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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.

PUBLISHED Reserved 2026-05-15 | Published 2026-05-16 | Updated 2026-05-16 | Assigner snyk




MEDIUM: 5.1CVSS: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
MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P

Problem types

Cross-site Scripting (XSS)

Credits

Yuki Matsuhashi

References

security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16635946

gist.github.com/...tsuhashi/72ed072d919f3c52adba298faa6a7da5

github.com/...ommit/232338b34c4653148ca2f44e897a765b72c8c98f

cve.org (CVE-2026-8656)

nvd.nist.gov (CVE-2026-8656)

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