CVE-2026-52746 (GCVE-0-2026-52746)
Vulnerability from cvelistv5 – Published: 2026-07-17 18:32 – Updated: 2026-08-03 20:50
VLAI
EPSS
VEX
Title
JSONata: Malicious inputs to "$toMillis" function can cause resource exhaustion
Summary
JSONata is a JSON query and transformation language. Prior to 2.2.0 and 1.8.9, 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 and 1.8.9.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 19:44 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/jsonata-js/jsonata/security/ad… | x_refsource_CONFIRM |
| https://github.com/jsonata-js/jsonata/pull/782 | x_refsource_MISC |
| https://github.com/jsonata-js/jsonata/pull/793 | x_refsource_MISC |
| https://github.com/jsonata-js/jsonata/commit/80ba… | x_refsource_MISC |
| https://github.com/jsonata-js/jsonata/commit/d6ff… | x_refsource_MISC |
| https://github.com/jsonata-js/jsonata/releases/ta… | x_refsource_MISC |
| https://github.com/jsonata-js/jsonata/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| jsonata-js | jsonata |
Affected:
>= 2.0.0, < 2.2.0
Affected: < 1.8.9 |
guessed |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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