GHSA-5847-rm3g-23mw OpenClaw has hook auth rate limiter bypass via IPv4-mapped IPv6 client key variants

Q: Which versions are affected by GHSA-5847-rm3g-23mw?

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

Q: Is GHSA-5847-rm3g-23mw being exploited?

There is no known exploitation of GHSA-5847-rm3g-23mw in the wild and no public exploit code.

Q: How do I fix GHSA-5847-rm3g-23mw?

Upgrade openclaw to 2026.2.22 or later.

Not scored Published 3 Mar 2026

Attackers can bypass hook authentication rate limits by using IPv4-mapped IPv6 addresses, doubling brute-force attempts.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is GHSA-5847-rm3g-23mw?

GHSA-5847-rm3g-23mw is a vulnerability in openclaw, published on 3 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability

The hook authentication throttle keyed failed attempts by raw socket remoteAddress text.

IPv4 and IPv4-mapped IPv6 forms of the same client (for example 1.2.3.4 and ::ffff:1.2.3.4) were treated as different clients, allowing separate rate-limit buckets.

Impact

An attacker could split failed hook-auth attempts across both address forms and effectively double the brute-force budget from 20 to 40 attempts per 60-second window.

Affected Components

src/gateway/server-http.ts
src/gateway/auth-rate-limit.ts

Affected Packages / Versions

Package: openclaw (npm)
Vulnerable versions: <= 2026.2.21-2
Patched version (planned next release): 2026.2.22

Remediation

Centralize and reuse canonical client-IP normalization for auth rate-limiting, and use that canonical key for hook auth throttling.

Fix Commit(s)

3284d2eb227e7b6536d543bcf5c3e320bc9d13c5

Release Process Note

patched_versions is pre-set to the planned next release (2026.2.22) so once npm release 2026.2.22 is published, this advisory can be published directly.

OpenClaw thanks @aether-ai-agent for reporting.

Which versions are affected by GHSA-5847-rm3g-23mw?