GHSA-8mvx-p2r9-r375: OpenClaw's web tools strict URL guard could lose DNS pinning when env proxy is configured

openclaw web tools strict URL fetch paths could lose DNS pinning when environment proxy variables are configured (HTTP_PROXY/HTTPS_PROXY/ALL_PROXY, including lowercase variants).

In affected builds, strict URL checks (for example web_fetch and citation redirect resolution) validated one destination during SSRF guard checks, but runtime connection routing could proceed through an env-proxy dispatcher.