CVE-2026-46374High· 7.5▾ TwilightSQLFluff: Uncontrolled Resource Consumption in SQLFluff Parser
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.3%
In deployments where untrusted users can provide SQL queries to be linted, an untrusted user can submit a malicious long query to any application using the parser to trigger a Denial of Service through resource exhaustion.
Versions 4.2.0 and up contain a configurable parse node limit, which is enabled by default, to prevent this manner of exploit.
Ori Nakar from Imperva Threat Research Team.
sqlfluff < 4.2.0Upgrade to a patched release:
sqlfluff 4.2.0Connected by shared product, vendor, weakness, or advisory.