CVE-2026-40173
A public proof of concept exists; no exploitation attested.
- Published2026-04-15
- WeaknessCWE-200 · CWE-215 · CWE-522
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2026-04-1521:17CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-40173?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-40173?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV · NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.2 | ≤ 1.2.8 | no fix published | OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 24.1 | ≤ 24.1.7 | no fix published | OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 25.3 | < 25.3.2 | 25.3.2 | NVD · OSV |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- github.comRelease Notes
- github.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
- Published
- 2026-04-15
- Last Modified
- 2026-06-17
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2026-40173?
Is CVE-2026-40173 actively exploited?
What is the CVSS score for CVE-2026-40173?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.