Dgraph: Pre-Auth Full Database Exfiltration via DQL Injection in NQuad Lang Field
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Dgraph is an open source distributed GraphQL database. Prior to 25.3.3, a vulnerability has been found in Dgraph that gives an unauthenticated attacker full read access to every piece of data in the database. This affects Dgraph's default configuration where ACL is not enabled. The attack requires two HTTP POSTs to port 8080. The first sets up a schema predicate with @unique @index(exact) @lang via /alter (also unauthenticated in default config). The second sends a crafted JSON mutation to /mutate?commitNow=true where a JSON key contains the predicate name followed by @ and a DQL injection payload in the language tag position. The injection exploits the addQueryIfUnique function in edgraph/server.go, which constructs DQL queries using fmt.Sprintf with unsanitized predicateName that includes the raw pred.Lang value. The Lang field is extracted from JSON mutation keys by x.PredicateLang(), which splits on @, and is never validated by any function in the codebase. The attacker injects a closing parenthesis to escape the eq() function, adds an arbitrary named query block, and uses a # comment to neutralize trailing template syntax. The injected query executes server-side and its results are returned in the HTTP response. This vulnerability is fixed in 25.3.3.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| dgraph-io | dgraph | before 25.3.3 | 25.3.3 | Patch available | CNA |
| — | github.com/dgraph-io/dgraph/v25 (Go) | before 25.3.3 | 25.3.3 | Patch available | GHSA-x92x-px7w-4gx4 |
| — | github.com/dgraph-io/dgraph/v24 (Go) | up to 24.1.8 | — | No fix listed | GHSA-x92x-px7w-4gx4 |
| — | github.com/dgraph-io/dgraph (Go) | up to 1.2.8 | — | No fix listed | GHSA-x92x-px7w-4gx4 |
- dgraph Vendordgraph-io Affected before 25.3.3 Fixed in 25.3.3 Patch available CNA
- github.com/dgraph-io/dgraph/v25 (Go) Vendor— Affected before 25.3.3 Fixed in 25.3.3 Patch available GHSA-x92x-px7w-4gx4
- github.com/dgraph-io/dgraph/v24 (Go) Vendor— Affected up to 24.1.8 Fixed in — No fix listed GHSA-x92x-px7w-4gx4
- github.com/dgraph-io/dgraph (Go) Vendor— Affected up to 1.2.8 Fixed in — No fix listed GHSA-x92x-px7w-4gx4
Remediation
- Fix · CNA dgraph (dgraph-io) Fixed in 25.3.3
- Fix · GHSA-x92x-px7w-4gx4 github.com/dgraph-io/dgraph/v25 (Go) Fixed in 25.3.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41328
- 2026-10-03 Alias added: GHSA-x92x-px7w-4gx4
References
More dgraph-io Dgraph vulnerabilities
- TI-2026-30079 Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph CVSS 3.1CRITICAL 9.8
- TI-2026-28987 Dgraph: Unauthenticated pprof endpoint leaks admin auth token CVSS 3.1CRITICAL 9.4
- TI-2026-27198 Dgraph Affected by Pre-Auth Database Overwrite + SSRF + File Read via restoreTenant Missing Authorization CVSS 3.1CRITICAL 10.0
- TI-2026-29928 Dgraph: Pre-Auth Full Database Exfiltration via DQL Injection in Upsert Condition Field CVSS 3.1CRITICAL 9.1
- TI-2023-14845 Dgraph Audit Log Encryption nonce reuse CVSS 3.1MEDIUM 5.5
Sources
- CVE-2026-41328 · CVE Program
- CVE-2026-41328 · NVD
- FIRST EPSS
- GHSA-x92x-px7w-4gx4 · GitHub Advisory Database · CC BY 4.0
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