🛡️ GHSA-g27f-9qjv-22pm — openclaw

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-117 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

OpenClaw log poisoning (indirect prompt injection) via WebSocket headers

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

GHSA-g27f-9qjv-22pm is classified as CWE-117: Improper Output Neutralization for Logs. The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.

Affected software

GHSA-g27f-9qjv-22pm is recorded against 1 package.

  • openclaw

Timeline and source

Published on 17 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE CWE-117
Public Exploit ✅ No
Source OSV
Published 2026-02-17
Updated 2026-08-12
Modified 2026-02-17
Fix URL N/A

Affected Packages

Software From version Fixed in
openclaw — —

Similar Threats

Free Vulnerability Check

Is your site affected by GHSA-g27f-9qjv-22pm?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against GHSA-g27f-9qjv-22pm and other known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesGitHub AdvisoryGitHub Advisory Undated