GHSA-C9H3-5P7R-MRJH OpenClaw: Discord event cover images bypassed sandbox media normalization

Summary Discord event cover images bypassed sandbox media normalization. Affected Packages / Versions - Package: openclaw - Ecosystem: npm - Affected versions: = 2026.4.7 = 2026.4.10 Impact Discord event cover image parameters could bypass the sandbox media normalization path used for outbound...