GHSA-86vw-mfpg-wwv9: jsonata: Malicious inputs to "$toMillis" function can cause resource exhaustion
A vulnerability in JSONata versions prior to 2.2.0 allows crafted inputs to the $toMillis function to trigger superlinear backtracking in the ISO-8601 validation regex, causing resource exhaustion and potential denial of service. This issue has been fixed in JSONata version 2.2.0 and later. Applications that evaluate user-provided JSONata expressions should update to prevent exploitation.
AI Analysis
Technical Summary
In JSONata versions before 2.2.0, the $toMillis function's ISO-8601 validation regex can be exploited by maliciously crafted inputs that do not match expected patterns, causing superlinear backtracking. This results in excessive CPU consumption leading to denial of service in applications processing user-supplied JSONata expressions. The vulnerability is tracked as CVE-2026-52746 and has been addressed in version 2.2.0 with patches that optimize the regex evaluation.
Potential Impact
Exploitation of this vulnerability can cause denial of service due to resource exhaustion (high impact on availability) in applications that evaluate user-provided JSONata expressions using affected versions. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in JSONata version 2.2.0 and later. Users should update to version 2.2.0 or newer to remediate this vulnerability. No additional mitigations are specified by the vendor advisory.
GHSA-86vw-mfpg-wwv9: jsonata: Malicious inputs to "$toMillis" function can cause resource exhaustion
Description
A vulnerability in JSONata versions prior to 2.2.0 allows crafted inputs to the $toMillis function to trigger superlinear backtracking in the ISO-8601 validation regex, causing resource exhaustion and potential denial of service. This issue has been fixed in JSONata version 2.2.0 and later. Applications that evaluate user-provided JSONata expressions should update to prevent exploitation.
CVSS v3.1
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In JSONata versions before 2.2.0, the $toMillis function's ISO-8601 validation regex can be exploited by maliciously crafted inputs that do not match expected patterns, causing superlinear backtracking. This results in excessive CPU consumption leading to denial of service in applications processing user-supplied JSONata expressions. The vulnerability is tracked as CVE-2026-52746 and has been addressed in version 2.2.0 with patches that optimize the regex evaluation.
Potential Impact
Exploitation of this vulnerability can cause denial of service due to resource exhaustion (high impact on availability) in applications that evaluate user-provided JSONata expressions using affected versions. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in JSONata version 2.2.0 and later. Users should update to version 2.2.0 or newer to remediate this vulnerability. No additional mitigations are specified by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-86vw-mfpg-wwv9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-52746"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a46ecb527e9c7971943c8a1
Added to database: 07/02/2026, 22:56:53 UTC
Last enriched: 07/02/2026, 23:09:43 UTC
Last updated: 07/03/2026, 03:35:33 UTC
Views: 4
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