Unauthenticated data enumeration via password DQL injection
Published Jul 8, 2026 · Updated Jul 8, 2026
DQL injection in Dgraph before 25.3.4 allows remote attackers to enumerate schema and node existence through a crafted GraphQL password. The GraphQL query rewriter inserts the raw password into a DQL checkpwd() string with fmt.Sprintf, so a double quote terminates the literal and appends query blocks. No authentication is required when a GraphQL endpoint exposes an @secret password query; injected blocks execute server-side, while response data leakage depends on configuration.
Summary
What happened
DQL injection in Dgraph before 25.3.4 allows remote attackers to enumerate schema and node existence through a crafted GraphQL password. The GraphQL query rewriter inserts the raw password into a DQL checkpwd() string with fmt.Sprintf, so a double quote terminates the literal and appends query blocks. No authentication is required when a GraphQL endpoint exposes an @secret password query; injected blocks execute server-side, while response data leakage depends on configuration.
The record
- CVE
- CVE-2026-44840
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Vendor
- Dgraph Labs
- Product
- Dgraph
- Classifications
- CWE-943, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 8, 2026CVE publishedPublication date reported by the CVE source.
- Jul 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 25.3.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- checkUserPassword DQL injection proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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