CVE-2026-102748 Dgraph: Zero Unauthenticated HTTP Admin removeNode Denial of Service
Unauthenticated attackers can disrupt the Dgraph Zero control plane and read topology data if the administrative interface is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-102748?
CVE-2026-102748 is a critical missing authorization vulnerability in dgraph-io dgraph, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Dgraph is an open source distributed GraphQL database. Prior to 25.4.0, Dgraph Zero registers administrative HTTP routes on port 6080 without authentication when the administrative interface is enabled. The /removeNode route accepts attacker-controlled id and group values and passes them to Server.RemoveNode, where group 0 can trigger ProposePeerRemoval. A remote unauthenticated attacker who can reach the Zero HTTP port can read topology through /state, allocate identifiers through /assign, access the exposed /moveTablet administrative route, or remove membership through /removeNode, disrupting the Zero control plane and destabilizing Alpha nodes that depend on Zero. The route registration occurs in dgraph/cmd/zero/run.go, and the demonstrated membership-removal path reaches Server.RemoveNode and ProposePeerRemoval. This issue is fixed in version 25.4.0.
Which versions are affected by CVE-2026-102748?
2 open source packages ship an affected version, including github.com/dgraph-io/dgraph/v25.
| Package | Affected | Fixed in |
|---|---|---|
github.com/dgraph-io/dgraph/v25 Go | All versions | 25.4.0 |
github.com/dgraph-io/dgraph/v25 Go | All versions | 25.4.0 |
How do I fix CVE-2026-102748?
Upgrade github.com/dgraph-io/dgraph/v25 to 25.4.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-102748 being exploited?
There is no known exploitation of CVE-2026-102748 in the wild and no public exploit code.
Sources
Also known as GHSA-qj98-gp63-54xj.