How severe is CVE-2024-27307?

CVE-2024-27307 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-27307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-27307?

CVE-2024-27307 affects Jsonata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-27307?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-27307 have an EU (EUVD) identifier?

Yes. CVE-2024-27307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0922.

When was CVE-2024-27307 published?

CVE-2024-27307 was published on 2024-03-06 and last updated on 2026-06-17.

CVE-2024-27307

CVE-2024-27307 is a critical-severity vulnerability in Jsonata with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0922
Weakness: CWE-1321
Affected product: Jsonata
Published: 2024-03-06
Last modified: 2026-06-17

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.

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.
How severe is CVE-2024-27307?: CVE-2024-27307 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-27307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-27307?: CVE-2024-27307 affects Jsonata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-27307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-27307 have an EU (EUVD) identifier?: Yes. CVE-2024-27307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0922.
When was CVE-2024-27307 published?: CVE-2024-27307 was published on 2024-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jsonata:jsonata:*:*:*:*:*:*:*:*

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