CVE-2026-12208Medium· 5.3▾ Sunlitjsonata: Function Binding Prototype Pollution via hasOwnProperty Override
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
Last analysed / modified upstream
0.3%
A weakness has been identified in jsonata-js jsonata up to 2.2.0. The affected element is the function createFrame of the file src/jsonata.js of the component Function Binding Frame System. This manipulation causes improperly controlled modification of object prototype attributes. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
jsonata < 1.8.8jsonata >= 2.0.0, < 2.2.1Upgrade to a patched release:
jsonata 1.8.8jsonata 2.2.1Connected by shared product, vendor, weakness, or advisory.
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