# GHSA-7q9x-8g6p-3x75: @grackle-ai/server: Unescaped Error String in renderPairingPage() HTML Template

> Unescaped error string in HTML template creates potential XSS risk if dynamic content is passed, though currently unexploitable with hardcoded inputs.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 25 Mar 2026

## What is GHSA-7q9x-8g6p-3x75?

GHSA-7q9x-8g6p-3x75 is a cross-site scripting vulnerability in @grackle-ai/server, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

### Impact

The `renderPairingPage()` function embeds the `error` parameter directly into HTML without escaping:
```typescript
const errorHtml = error ? `<p style="color:#e74c3c">${error}</p>` : "";
```

All current call sites pass hardcoded strings, so this is **not exploitable today**. However, the function is architecturally fragile — if a future code change passes user-controlled or dynamic content into the error parameter, it would create an XSS vulnerability.

The `renderAuthorizePage()` function in the same file correctly uses `escapeHtml()` for dynamic content, making this an inconsistency.

**Affected code:**
- `packages/server/src/index.ts:64-89` — `renderPairingPage()` with unescaped error interpolation
- Compare: `packages/server/src/index.ts:130` — `renderAuthorizePage()` correctly uses `escapeHtml()`

### Patches

v0.70.1

**Fix:** Apply `escapeHtml()` to the error parameter:
```typescript
const errorHtml = error ? `<p style="color:#e74c3c">${escapeHtml(error)}</p>` : "";
```

### Workarounds

No workaround needed — all current callers pass hardcoded strings.

### Resources

- CWE-79: Improper Neutralization of Input During Web Page Generation
- File: `packages/server/src/index.ts`

## Which versions are affected by GHSA-7q9x-8g6p-3x75?

2 open source packages ship an affected version, including @grackle-ai/server.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@grackle-ai/server` | npm | All versions | 0.70.1 |
| `@grackle-ai/server` | npm | All versions | 0.70.1 |

## How do I fix GHSA-7q9x-8g6p-3x75?

Upgrade @grackle-ai/server to 0.70.1 or later.

## Is GHSA-7q9x-8g6p-3x75 being exploited?

There is no known exploitation of GHSA-7q9x-8g6p-3x75 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-7q9x-8g6p-3x75 and fix it if it is affected.

What it is: GHSA-7q9x-8g6p-3x75 is a cross-site scripting vulnerability in @grackle-ai/server, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of GHSA-7q9x-8g6p-3x75 in the wild and no public exploit code.

Affected packages and fixed versions:
- @grackle-ai/server (npm): affected all versions; fixed in 0.70.1
- @grackle-ai/server (npm): affected all versions; fixed in 0.70.1

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-7q9x-8g6p-3x75/ (Markdown: https://insights.sbomify.com/GHSA-7q9x-8g6p-3x75/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-7q9x-8g6p-3x75

---
From sbomify Insights: https://insights.sbomify.com/GHSA-7q9x-8g6p-3x75/
Summaries are generated and may contain mistakes; the official description above is the record.