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Description

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.

PUBLISHED Reserved 2026-06-14 | Published 2026-06-15 | Updated 2026-06-15 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Improperly Controlled Modification of Object Prototype Attributes

Code Injection

Product status

2.0
affected

2.1
affected

2.2.0
affected

Timeline

2026-06-14:Advisory disclosed
2026-06-14:VulDB entry created
2026-06-14:VulDB entry last update

Credits

Frederick (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/370850 (VDB-370850 | jsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollution) vdb-entry technical-description

vuldb.com/vuln/370850/cti (VDB-370850 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-12208 (CVE-2026-12208 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/832446 (Submit #832446 | jsonata-js jsonata 2.2.0 Prototype Pollution) third-party-advisory

github.com/OriginSecurityX/jsonata-hasownproperty-bypass exploit

cve.org (CVE-2026-12208)

nvd.nist.gov (CVE-2026-12208)

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