# GHSA-pqh8-p93p-2rx7: @dynatrace-oss/dynatrace-mcp-server has a DQL injection via parameters not documented as DQL

> Attackers can inject DQL pipeline stages into Dynatrace MCP server tools to bypass field scopes, time windows, and display caps, potentially reading unauthorized data.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 31 Jul 2026

## What is GHSA-pqh8-p93p-2rx7?

GHSA-pqh8-p93p-2rx7 is a code injection vulnerability in @dynatrace-oss/dynatrace-mcp-server, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

### Summary
A DQL injection vulnerability in several read tools lets a caller bypass the tools' documented field-scope, time-window, and display caps by injecting DQL pipeline stages through parameters typed as identifiers.

### Details
Several tools interpolate caller-supplied parameters directly into DQL query strings without quoting or escaping. The affected parameters are documented in their Zod schemas as identifiers or constrained shorthand (such as `"24h"` timeframe values or Kubernetes UIDs) - not as DQL expressions. The interpolation lets a caller break out of string literals, append arbitrary DQL pipeline stages, and use `//` line comments (documented in the [Dynatrace DQL language reference](https://docs.dynatrace.com/docs/discover-dynatrace/platform/grail/dynatrace-query-language/dql-reference)) to discard the rest of the intended query.

The marginal-privilege ceiling is low because the operator's token also exposes `execute_dql` with full DQL access. What the injection grants is the ability to bypass the affected tools' contract: the `readOnlyHint: true` annotation that MCP clients may treat as a signal to auto-approve, the per-tool field selection (e.g., `| fields id, name, type`), the display caps (`maxProblemsToDisplay`, `maxVulnerabilitiesToDisplay`, `maxEntitiesToDisplay`), and the time-window bounds.

The vulnerable interpolations are:

| File | Line | Parameter | Interpolation |
|------|------|-----------|---------------|
| `src/capabilities/find-monitored-entity-by-name.ts` | 23 | `entityNames[]` | `` `fetch ${entityType} \| search "*${entityNames.join('*" OR "*')}*" \| fieldsAdd entity.type \| expand tags` `` |
| `src/capabilities/find-monitored-entity-by-name.ts` | 41 | `entityNames[]` | `` `smartscapeNodes "*" \| search "*${entityNames.join('*" OR "*')}*" \| fields id, name, type` `` |
| `src/capabilities/list-problems.ts` | 27 | `timeframe` | `` `fetch dt.davis.problems, from: now()-${timeframe}, to: now()` `` |
| `src/capabilities/list-vulnerabilities.ts` | 19 | `timeframe` | `` `fetch security.events, from: now()-${timeframe}, to: now()` `` |
| `src/capabilities/list-exceptions.ts` | 11 | `timeframe` | `` `fetch user.events, from: now()-${timeframe}, to: now()` `` |
| `src/capabilities/get-events-for-cluster.ts` | 20 | `timeframe` | `` `fetch events, from: now()-${timeframe}, to: now()` `` |
| `src/capabilities/get-events-for-cluster.ts` | 27 | `clusterId`, `kubernetesEntityId` | `` `\| filter k8s.cluster.uid == "${clusterId}" or dt.entity.kubernetes_cluster == "${kubernetesEntityId}"` `` |

All Zod schemas for these parameters use `z.string()` or `z.array(z.string())` with no pattern validation.

### PoC
**`clusterId` - quote-and-comment break-out.** With `clusterId = 'x" or 1==1 //'` the constructed query becomes:

```
| filter k8s.cluster.uid == "x" or 1==1 //" or dt.entity.kubernetes_cluster == ""
```

The first `"` closes the string literal, `or 1==1` neutralises the filter to match every row, and `//` discards the rest of the line including the `kubernetesEntityId` guard.

**`entityNames` - pipeline-stage injection.** With `entityNames = ['svc" | fields id, name, tags //']` the constructed smartscape query becomes:

```
smartscapeNodes "*" | search "*svc" | fields id, name, tags //*" | fields id, name, type
```

After the `//` line comment, the effective query is `smartscapeNodes "*" | search "*svc" | fields id, name, tags`. The original `| fields id, name, type` stage is suppressed and replaced with the attacker's field selection - the tool returns whatever field set the attacker requests (including ones not in the tool's documented output contract).

**`timeframe` - prefix injection.** With `timeframe = '30d, to: now() | fieldsAdd internal_secret //'` the list-problems query becomes:

```
fetch dt.davis.problems, from: now()-30d, to: now() | fieldsAdd internal_secret //, to: now()
| filter isNull(dt.davis.is_duplicate) OR not(dt.davis.is_duplicate)
...
```

A new pipeline stage is injected before the tool's intended `| filter`, and the rest of the query is commented out.

The server's own `verify_dql` tool can be used to confirm any specific injection payload parses as valid DQL.

### Impact
- A caller (typically via prompt injection of an LLM that has access to the affected tools) can bypass the tools' field-scope, time-window, and display caps.
- The affected tools are annotated `readOnlyHint: true`, which some MCP clients treat as a signal to auto-approve. The injection turns a "safe" read tool into an arbitrary-DQL surface.
- No new data access beyond what `execute_dql` already provides - the marginal impact is the auto-approval pathway and the broken tool contract, not privilege escalation.

## Which versions are affected by GHSA-pqh8-p93p-2rx7?

2 open source packages ship an affected version, including @dynatrace-oss/dynatrace-mcp-server.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@dynatrace-oss/dynatrace-mcp-server` | npm | All versions | 2.1.1 |
| `@dynatrace-oss/dynatrace-mcp-server` | npm | All versions | 2.1.1 |

## How do I fix GHSA-pqh8-p93p-2rx7?

Upgrade @dynatrace-oss/dynatrace-mcp-server to 2.1.1 or later.

## Is GHSA-pqh8-p93p-2rx7 being exploited?

There is no known exploitation of GHSA-pqh8-p93p-2rx7 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-pqh8-p93p-2rx7 and fix it if it is affected.

What it is: GHSA-pqh8-p93p-2rx7 is a code injection vulnerability in @dynatrace-oss/dynatrace-mcp-server, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-pqh8-p93p-2rx7 in the wild and no public exploit code.

Affected packages and fixed versions:
- @dynatrace-oss/dynatrace-mcp-server (npm): affected all versions; fixed in 2.1.1
- @dynatrace-oss/dynatrace-mcp-server (npm): affected all versions; fixed in 2.1.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/GHSA-pqh8-p93p-2rx7/ (Markdown: https://insights.sbomify.com/GHSA-pqh8-p93p-2rx7/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-pqh8-p93p-2rx7

---
From sbomify Insights: https://insights.sbomify.com/GHSA-pqh8-p93p-2rx7/
Summaries are generated and may contain mistakes; the official description above is the record.