Answer in brief
CVE-2026-28383 records a Medium severity (CVSS 6.5) vulnerability in Grafana plugin resources can lead to unbounded memory allocation. The current sources do not mark it as known exploited. The current feed maps Grafana/Grafana OSS (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Grafana/Grafana OSS (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:11.6.14:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:11.6.14:security01:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:12.2.8:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:12.2.8:security01:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:12.3.6:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:12.3.6:security01:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:12.4.3:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:13.0.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:grafana:grafana:13.0.1:-:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Grafana/Grafana OSSgeneric | 6.7.0 || >=11.6.14 <11.6.14+security-04 || 12.0.0 || >=12.2.8 <12.2.8+security-04 || 12.3.0 || >=12.3.6 <12.3.6+security-04 || 12.4.0 || >=12.4.3 <12.4.3+security-02 || 13.0.0 || >=13.0.1 <13.0.1+security-01 | 11.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, 13.0.1+security-01 |
| Grafana/Grafana OSSgeneric | >=6.7.0 <=11.6.14 || >=11.6.14 <11.6.14+security-04 || >=12.0.0 <=12.2.8 || >=12.2.8 <12.2.8+security-04 || >=12.3.0 <=12.3.6 || >=12.3.6 <12.3.6+security-04 || >=12.4.0 <=12.4.3 || >=12.4.3 <12.4.3+security-02 || >=13.0.0 <=13.0.1 || >=13.0.1 <13.0.1+security-01 | 11.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, 13.0.1+security-01 |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a denial of service.
Quoted source text, attributed separately from HOL analysis.