HIGH8.2
GHSA-j4fx-xxwh-2485
jsondiffpatch patch APIs are vulnerable to prototype pollution
Quick fix
GHSA-j4fx-xxwh-2485 — jsondiffpatch: upgrade to the fixed version with the command below.
npm install jsondiffpatch@0.7.6Details
Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch() and jsondiffpatch/formatters/jsonpatch.patch() APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property names and path segments are used to traverse and modify objects without restricting access to special properties like __proto__ or constructor.prototype, allowing modification of Object.prototype.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-8657[ADVISORY]
- https://github.com/benjamine/jsondiffpatch/commit/381c0125efab49f6f0dbc08317d01d55717672af[WEB]
- https://gist.github.com/yuki-matsuhashi/e570fb1579ae1f3190059b622b0473fb[WEB]
- https://github.com/benjamine/jsondiffpatch[PACKAGE]
- https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/filters/nested.ts%23L107-L115[WEB]
- https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/filters/nested.ts%23L82-L87[WEB]
- https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/formatters/jsonpatch-apply.ts%23L146-L168[WEB]
- https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/formatters/jsonpatch-apply.ts%23L171-L199[WEB]
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-16732792[WEB]
- https://security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16322990[WEB]