CVE-2026-52746

highCVSS 7.5covered by 1 sourcefirst seen 2026-07-02

Impact In JSONata <v2.2.0, it is possible to craft non-matching inputs to the $toMillis function that cause superlinear backtracking in the ISO-8601 validation regex. This may lead to denial of service in applications that evaluate user-provided JSONata expressions. Patches This issue has been addressed in JSONata version >= 2.2.0 via fixes that include https://github.com/jsonata-js/jsonata/pull/782 and https://github.com/jsonata-js/jsonata/pull/793. Applications that evaluate user-provided expressions should update ASAP to prevent exploitation. References https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0 Credit Thank you to Doruk Tan Öztürk for disclosing this issue.

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Advisory coverage (1)

highGHSA-86vw-mfpg-wwv9: jsonata: Malicious inputs to "$toMillis" function can cause resource exhaustionghsa · 2026-07-02

External references

NVD record for CVE-2026-52746

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