Unleash: Global Mustache.escape override disables HTML escaping process-wide, enabling Slack/Teams link-injection via unrestricted username

Vulnerability Details File: src/lib/addons/feature-event-formatter-md.ts Line: 355 in v8.0.1; format method Root Cause FeatureEventFormatterMd.format does: ts Mustache.escape = text = text; const text = Mustache.renderaction, context; mustache pinned ^4.2.0, confirmed installed 4.2.0 keeps escape...

CVE-2026-63466 Unleash: Global Mustache.escape override disables HTML escaping process-wide, enabling Slack/Teams link-injection via unrestricted username

Unleash is an open-source feature management platform. Prior to 8.0.3, FeatureEventFormatterMd.format in src/lib/addons/feature-event-formatter-md.ts assigns Mustache.escape to an identity function before rendering action and path templates. Because Mustache.escape is process-wide, the assignment...