Grafana users with email as a username can block other users from signing in
Grafana is an open source data visualization platform for metrics, logs, and traces. Versions prior to 9.1.8 and 8.5.14 allow one user to block another user's login attempt by registering someone else'e email address as a username. A Grafana user’s username and email address are unique fields, that means no other user can have the same username or email address as another user. A user can have an email address as a username. However, the login system allows users to log in with either username or email address. Since Grafana allows a user to log in with either their username or email address, this creates an usual behavior where `user_1` can register with one email address and `user_2` can register their username as `user_1`’s email address. This prevents `user_1` logging into the application since `user_1`'s password won’t match with `user_2`'s email address. Versions 9.1.8 and 8.5.14 contain a patch. There are no workarounds for this issue.
- Published
- Oct 13, 2022
- Updated
- Jun 17, 2026
- EPSS
- 0.9% · 58th percentile
- CWE
- CWE-287
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Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 4.3
- CNA · GitHub_M
- 4.3
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| grafana | grafana | cpe:2.3:a:grafana:grafana |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- grafana grafanabefore 8.5.14
- grafana grafana9.0.0 and later · before 9.1.8
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.
grafana grafana
- >= 9.0.0, < 9.1.8, >= 8.5.0, < 8.5.14affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | grafana | before 7.5.15-4.el8 | 7.5.15-4.el8 |
| AlmaLinux:9 | grafana | before 9.0.9-2.el9 | 9.0.9-2.el9 |
| Go | github.com/grafana/grafana | from 9.0.0 · before 9.1.8 | 9.1.8 |
| Go | github.com/grafana/grafana | all versions | — |
| Go | github.com/grafana/grafana | before 8.5.14 | 8.5.14 |
| openSUSE:Tumbleweed | grafana | before 8.5.14-1.1 | 8.5.14-1.1 |
| Red Hat:enterprise_linux:8::appstream | grafana | before 0:7.5.15-4.el8 | 0:7.5.15-4.el8 |
| Red Hat:enterprise_linux:8::appstream | grafana-debuginfo | before 0:7.5.15-4.el8 | 0:7.5.15-4.el8 |
| Red Hat:enterprise_linux:9::appstream | grafana | before 0:9.0.9-2.el9 | 0:9.0.9-2.el9 |
| Red Hat:enterprise_linux:9::appstream | grafana-debuginfo | before 0:9.0.9-2.el9 | 0:9.0.9-2.el9 |
| Red Hat:enterprise_linux:9::appstream | grafana-debugsource | before 0:9.0.9-2.el9 | 0:9.0.9-2.el9 |
| SUSE:Linux Enterprise Module for Package Hub 15 SP4 | grafana | before 8.5.15-150200.3.32.1 | 8.5.15-150200.3.32.1 |
| SUSE:Linux Enterprise Module for Package Hub 15 SP4 | grafana | before 8.5.15-150200.3.32.1 | 8.5.15-150200.3.32.1 |
| SUSE:Manager Client Tools 12 | grafana | before 8.5.15-1.39.1 | 8.5.15-1.39.1 |
| SUSE:Manager Client Tools 12 | kiwi-desc-saltboot | before 0.1.1673279145.e7616bd-1.32.1 | 0.1.1673279145.e7616bd-1.32.1 |
| SUSE:Manager Client Tools 12 | mgr-osad | before 4.3.7-1.42.1 | 4.3.7-1.42.1 |
| SUSE:Manager Client Tools 12 | mgr-push | before 4.3.5-1.24.1 | 4.3.5-1.24.1 |
| SUSE:Manager Client Tools 12 | rhnlib | before 4.3.5-21.46.1 | 4.3.5-21.46.1 |
| SUSE:Manager Client Tools 12 | spacecmd | before 4.3.18-38.115.1 | 4.3.18-38.115.1 |
| SUSE:Manager Client Tools 12 | spacewalk-client-tools | before 4.3.14-52.83.1 | 4.3.14-52.83.1 |
| SUSE:Manager Client Tools 12 | uyuni-common-libs | before 4.3.7-1.30.1 | 4.3.7-1.30.1 |
| SUSE:Manager Client Tools 15 | dracut-saltboot | before 0.1.1673279145.e7616bd-150000.1.44.1 | 0.1.1673279145.e7616bd-150000.1.44.1 |
| SUSE:Manager Client Tools 15 | dracut-saltboot | before 0.1.1673279145.e7616bd-150000.1.44.1 | 0.1.1673279145.e7616bd-150000.1.44.1 |
| SUSE:Manager Client Tools 15 | grafana | before 8.5.15-150000.1.39.1 | 8.5.15-150000.1.39.1 |
+13
Same product
grafana: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-39226Snapshot authentication bypass in grafanaKEV89Now
- CVE-2021-43798Grafana path traversalKEV87Now
- CVE-2024-9264Grafana SQL Expressions allow for remote code execution65This week
- CVE-2020-13379The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control issue.62This week
- CVE-2018-15727Grafana 2.x, 3.x, and 4.x before 4.6.4 and 5.x before 5.2.3 allows authentication bypass because an attacker can generate a valid "remember 58Plan
- CVE-2022-31097Stored XSS in Grafana's Unified Alerting55Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:grafana | 9.0.9-2.el9 · AlmaLinux:9 | Package registry (OSV) |
| Go:github.com/grafana/grafana | 8.5.14 | Package registry (OSV) |
| Go:github.com/grafana/grafana | 9.1.8 | Package registry (OSV) |
| opensuse:dracut-saltboot | 0.1.1673279145.e7616bd-150000.1.44.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:grafana | 8.5.15-150200.3.32.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:spacecmd | 4.3.18-150000.3.92.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:grafana | 0:9.0.9-2.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:grafana-debuginfo | 0:9.0.9-2.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:grafana-debugsource | 0:9.0.9-2.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| suse:dracut-saltboot | 0.1.1673279145.e7616bd-150000.1.44.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:grafana | 8.5.15-1.39.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:grafana | 8.5.15-150000.1.39.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:kiwi-desc-saltboot | 0.1.1673279145.e7616bd-1.32.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:mgr-osad | 4.3.7-1.42.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:mgr-osad | 4.3.7-150000.1.42.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:mgr-push | 4.3.5-1.24.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:mgr-push | 4.3.5-150000.1.24.2 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:rhnlib | 4.3.5-150000.3.40.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:rhnlib | 4.3.5-21.46.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:spacecmd | 4.3.18-150000.3.92.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:spacecmd | 4.3.18-38.115.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:spacewalk-client-tools | 4.3.14-150000.3.74.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
| suse:spacewalk-client-tools | 4.3.14-52.83.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:uyuni-common-libs | 4.3.7-1.30.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:uyuni-common-libs | 4.3.7-150000.1.30.1 · SUSE:Manager Client Tools 15 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
- Grafana Labs - Vulnerability Disclosure Program (VDP)Intigriti · disclosure only (VDP) · grafana/grafana
- Grafana Labs - Vulnerability Disclosure Program (VDP)Intigriti · disclosure only (VDP)
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- low · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- Low
Weakness class (CWE)
CWE-287 · Improper AuthenticationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
nvd-primary
Root cause
Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.
The bug in code
The whole CWE-287 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);Fixed
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Authentication AbuseCAPEC-114Medium
- Authentication BypassCAPEC-115Medium
- Identity SpoofingCAPEC-151likelihood: Medium · Medium
- Fake the Source of DataCAPEC-194Medium
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- Utilizing REST's Trust in the System Resource to Obtain Sensitive DataCAPEC-57likelihood: Medium · Very High
- Session HijackingCAPEC-593likelihood: High · Very High
- Token ImpersonationCAPEC-633Medium
ATT&CK techniques
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/grafana/grafana/commit/5644758f0c5ae9955a4e5480d71f9bef57fdce35
- github.com/grafana/grafana/releases/tag/v9.1.8
- github.com/grafana/grafana/security/advisories/GHSA-gj7m-853r-289r
Vendor advisories and official records. Exploit/PoC links are deliberately left out.