GHSA-mpv3-g8m3-3fjc
CRITICALGHSA-mpv3-g8m3-3fjc is a critical-severity (CVSS 9.4) CWE-290 vulnerability in github.com/grafana/grafana. O3 Security confirms whether GHSA-mpv3-g8m3-3fjc is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Grafana vulnerable to Authentication Bypass by Spoofing
Real-World Exposure
github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafanaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Grafana is validating Azure AD accounts based on the email claim.
On Azure AD, the profile email field is not unique and can be easily modified.
This leads to account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant app.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/grafana/grafana | ≥ 9.4.0&&< 9.4.13 | 9.4.13 |
| 🐹Go | github.com/grafana/grafana | ≥ 9.3.0&&< 9.3.16 | 9.3.16 |
| 🐹Go | github.com/grafana/grafana | ≥ 9.0.0&&< 9.2.20 | 9.2.20 |
| 🐹Go | github.com/grafana/grafana | all versions | 8.5.27 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/grafana/grafana. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update github.com/grafana/grafana to 9.4.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mpv3-g8m3-3fjc is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-mpv3-g8m3-3fjc is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-mpv3-g8m3-3fjc. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-mpv3-g8m3-3fjc in your dependencies?
O3 detects GHSA-mpv3-g8m3-3fjc across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.