CVE-2026-28383 — Denial of Service
CVE-2026-28383 — 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.
What This Means For You
- If your environment is affected by this vulnerability type, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-28383 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
1 rule · 6 SIEM formats1 detection rule auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Grafana Plugin Resources Endpoint Unbounded Memory Allocation — CVE-2026-28383
title: Grafana Plugin Resources Endpoint Unbounded Memory Allocation — CVE-2026-28383
id: scw-2026-05-13-ai-1
status: experimental
level: critical
description: |
This rule detects requests to Grafana's plugin resources endpoint ('/api/plugins/') using the POST method. This specific endpoint is vulnerable to CVE-2026-28383, where an attacker can send a large request body, leading to unbounded memory allocation and a denial of service. This detection focuses on the specific URI path and HTTP method known to be exploited.
author: SCW Feed Engine (AI-generated)
date: 2026-05-13
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-28383/
tags:
- attack.impact
- attack.t1499
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/api/plugins/'
cs-method|exact:
- 'POST'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-28383 | vulnerability | CVE-2026-28383 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 13, 2026 at 23:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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