PT-2026-25463 · Npm · Openclaw

Published 2026-03-03 · Updated 2026-03-03

OSV

CVSS v4.0

6.3

Medium

Base vector

AV: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.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

GHSA-H97F-6PQJ-Q452

Affected Products

Openclaw

References · 4

• https://osv.dev/vulnerability/GHSA-h97f-6pqj-q452 · Vendor Advisory
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/commit/baf656bc6fd7f83b6033e6dbc2548ec75028641f · Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-h97f-6pqj-q452 · Note