# GHSA-g27f-9qjv-22pm: OpenClaw log poisoning (indirect prompt injection) via WebSocket headers

> Unauthenticated attackers can inject malicious prompts into logs via WebSocket headers, risking indirect prompt injection if logs are processed by LLMs.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Feb 2026

## What is GHSA-g27f-9qjv-22pm?

GHSA-g27f-9qjv-22pm is a vulnerability in openclaw, published on 17 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

### Summary
In `openclaw` versions prior to `2026.2.13`, OpenClaw logged certain WebSocket request headers (including `Origin` and `User-Agent`) without neutralization or length limits on the "closed before connect" path.

If an unauthenticated client can reach the gateway and send crafted header values, those values may be written into core logs. Under workflows where logs are later read or interpreted by an LLM (for example via AI-assisted debugging), this can increase the risk of indirect prompt injection (log poisoning).

### Affected Packages / Versions
- Package: `openclaw` (npm)
- Affected: `<= 2026.2.12`
- Fixed: `>= 2026.2.13`

### Details
- Component: `src/gateway/server/ws-connection.ts`
- Trigger: WebSocket connection closes before completing the connect/handshake; header values are included in the log message and structured context.

### Impact
This issue is primarily an indirect prompt injection risk and depends on downstream log consumption behavior. If you do not feed logs into an LLM or other automation, impact is limited.

### Fix
Header values written to gateway logs are now sanitized and truncated (including removal of control/format characters and length limiting).
- Fix commits: `d637a263505448bf4505b85535babbfaacedbaac`, `e84318e4bcdc948d92e57fda1eb763a65e1774f0` (PR #15592)

### Workarounds
- Upgrade to `openclaw@2026.2.13` or later.
- Treat logs as untrusted input when using AI-assisted debugging (sanitize/escape, and do not auto-execute instructions derived from logs).
- Restrict gateway network exposure; apply reverse-proxy limits on header size where applicable.

Thanks @pkerkhofs for reporting.

## Which versions are affected by GHSA-g27f-9qjv-22pm?

2 open source packages ship an affected version, including openclaw.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `openclaw` | npm | All versions | 2026.2.13 |
| `openclaw` | npm | All versions | 2026.2.13 |

## How do I fix GHSA-g27f-9qjv-22pm?

Upgrade openclaw to 2026.2.13 or later.

## Is GHSA-g27f-9qjv-22pm being exploited?

There is no known exploitation of GHSA-g27f-9qjv-22pm in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-g27f-9qjv-22pm and fix it if it is affected.

What it is: GHSA-g27f-9qjv-22pm is a vulnerability in openclaw, published on 17 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-g27f-9qjv-22pm in the wild and no public exploit code.

Affected packages and fixed versions:
- openclaw (npm): affected all versions; fixed in 2026.2.13
- openclaw (npm): affected all versions; fixed in 2026.2.13

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-g27f-9qjv-22pm/ (Markdown: https://insights.sbomify.com/GHSA-g27f-9qjv-22pm/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-g27f-9qjv-22pm

---
From sbomify Insights: https://insights.sbomify.com/GHSA-g27f-9qjv-22pm/
Summaries are generated and may contain mistakes; the official description above is the record.