CVE-2026-63637: Dgraph: DQL Injection via unvalidated regexp filter argument in GraphQL query rewriter

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-06 · updated 2026-10-24
Weakness: CWE-943

Description

Dgraph is an open source distributed GraphQL database. Prior to 25.3.8, maybeQuoteArg in graphql/resolve/query_rewriter.go passes regexp filter strings into generated DQL without quoting or validating the /pattern/flags form, allowing crafted GraphQL query or mutation filters to inject DQL operators, disclose unintended nodes, or expand modification and deletion targets. This issue is fixed in version 25.3.8.

Affected products

dgraph-io dgraph: before 25.3.8

References

https://github.com/dgraph-io/dgraph/commit/aaff09ab9608f87d88e9d601e71d271306083392
https://github.com/dgraph-io/dgraph/security/advisories/GHSA-33p8-wc97-5qcj

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