CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

GHSA-86vw-mfpg-wwv9: jsonata: Malicious inputs to "$toMillis" function can cause resource exhaustion

highCVSS 7.5CVE-2026-52746
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.

Details

Source
GitHub Security Advisories (INTL · database · site)
Severity
high — CVSS 7.5
Published
2026-07-02
Last updated
2026-07-02
Exploitation
Not in CISA KEV at last sync

Original advisory: https://github.com/advisories/GHSA-86vw-mfpg-wwv9

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-52746coverage & exploitation statusNVD · CVE.org

More from GitHub Security Advisories