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Vulnerabilities CVE-2026-8657

CVE-2026-8657

High
Open
TLP:CLEAR

AI Analysis

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Description

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.

Details

CVSS Score
8.8
EPSS Score
0.38%

30.8th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P
Confidence
90%
Published
May 16, 2026
Last Modified
Aug 13, 2026
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