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CVE-2026-52746

34
FAUCET Score

JSONata is a JSON query and transformation language. Prior to 2.2.0, malicious non-matching inputs to the $toMillis function can cause superlinear backtracking in the ISO-8601 validation regex, leading to denial of service in applications that evaluate user-provided JSONata expressions. This issue is fixed in version 2.2.0.

First published: Jul 17, 2026Last modified: Jul 17, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Jsonata-JsJsonata
< 2.2.0CNA affected

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 10th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: jsonataFixed in: 2.2.0

Vendor Advisories (1)

npmGHSA-86vw-mfpg-wwv9high

jsonata: Malicious inputs to "$toMillis" function can cause resource exhaustion

Jul 2, 2026

References

github.com / jsonata-js/jsonata/commit/80ba95d170f74e3f20f4f36b8b77d8c85cea7686
github.com / jsonata-js/jsonata/commit/d6ffc17cb16a8e53c222205bd274624e919cce0b
github.com / jsonata-js/jsonata/pull/782
github.com / jsonata-js/jsonata/pull/793
github.com / jsonata-js/jsonata/releases/tag/v2.2.0
github.com / jsonata-js/jsonata/security/advisories/GHSA-86vw-mfpg-wwv9