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No exploitation reportedFix available

CVE-2024-27307

No exploitation reported by the sources we read.

  • Published2024-03-06
  • Fixed in2.0.4 · 1.8.7
  • WeaknessCWE-1321

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

JSONata is a JSON query and transformation language. Starting in version 1.4.0 and prior to version 1.8.7 and 2.0.4, a malicious expression can use the transform operator to override properties on the `Object` constructor and prototype. This may lead to denial of service, remote code execution or other unexpected behavior in applications that evaluate user-provided JSONata expressions. This issue has been fixed in JSONata versions 1.8.7 and 2.0.4. Applications that evaluate user-provided expressions should update ASAP to prevent exploitation. As a workaround, one may apply the patch manually.

Timeline

dates in UTC
  1. 2024-03-0620:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-27307?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-27307?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV · CISA-ADP
Jsonata
BranchAffectedFixed in
2.0≥ 2.0.0, < 2.0.42.0.4
1.x≥ 1.4.0, < 1.8.71.8.7
Jsonatajs jsonata
BranchAffectedFixed in
2.0≥ 2.0.0, < 2.0.42.0.4
1.x≥ 1.4.0, < 1.8.71.8.7

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Jsonata to 2.0.4 · 1.8.7

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2024-03-07
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-1321read 2026-10-23
  • FIRST EPSSEPSS score1.4 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2024-03-06
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2024-27307?

JSONata is a JSON query and transformation language. Starting in version 1.4.0 and prior to version 1.8.7 and 2.0.4, a malicious expression can use the transform operator to override properties on the `Object` constructor and prototype. This may lead to denial of service, remote code execution or other unexpected behavior in applications that evaluate user-provided JSONata expressions. This issue has been fixed in JSONata versions 1.8.7 and 2.0.4. Applications that evaluate user-provided expressions should update ASAP to prevent exploitation. As a workaround, one may apply the patch manually.

Is CVE-2024-27307 actively exploited?

Active exploitation of CVE-2024-27307 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-27307?

CVE-2024-27307 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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