PT-2026-25463

Published

2026-03-03

Updated

2026-03-03

Description by

CVSS 4.0

6.3

Medium

MetricsAV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

Summary

OpenClaw's SSRF IP classifier did not treat IPv6 multicast literals (ff00::/8) as blocked/private-internal. This allowed literal multicast hosts to pass SSRF preflight checks.

Impact

A bypass in address classification existed for IPv6 multicast literals. OpenClaw's network fetch/navigation paths are constrained to HTTP/HTTPS and this was triaged as low-severity defense-in-depth hardening.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <= 2026.2.24
Patched versions: >= 2026.2.25

Technical Details

The IPv6 private/internal range set omitted multicast, so addresses like ff02::1 and ff05::1:3 were not classified as blocked by the shared SSRF classifier.

Fix Commit(s)

baf656bc6fd7f83b6033e6dbc2548ec75028641f

Release Process Note

patched versions is pre-set to the planned next npm release (2026.2.25). Once that release is published on npm, the advisory is published.

OpenClaw thanks @zpbrent for reporting.

Exploitability

Fix

Impacts

Vendors

Affected products

Weakness enumeration

CWE-918: Server-Side Request Forgery (SSRF)

Related identifiers

GHSA-H97F-6PQJ-Q452

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