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CVE-2026-12208

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:00b9aee95963a56215b33b69014f9d3095683ba6d19c064346c93559c341e4dc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS: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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-94","description":"Code Injection","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-1321","description":"Improperly Controlled Modification of Object Prototype Attributes","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:jsonata-js:jsonata:*:*:*:*:*:*:*:*"],"modules":["Function Binding Frame System"],"product":"jsonata","vendor":"jsonata-js","versions":[{"status":"affected","version":"2.0"},{"status":"affected","version":"2.1"},{"status":"affected","version":"2.2.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS: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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-94","description":"Code Injection","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-1321","description":"Improperly Controlled Modification of Object Prototype Attributes","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["exploit"],"url":"https://github.com/OriginSecurityX/jsonata-hasownproperty-bypass"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/references/4
{"name":"CVE-2026-12208 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-12208"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/references/2
{"name":"Submit #832446 | jsonata-js jsonata 2.2.0 Prototype Pollution","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/832446"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/references/3
{"name":"VDB-370850 | jsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollution","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/370850"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/references/0
{"name":"VDB-370850 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/370850/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f254d333e7b3dba625aae4fe9dc48ab35e3fc7ead06d2a0c4de137c1069fe15 · sha256:cccb691e0d8e8d12… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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