CVE-2026-63466

01/תיאור (מקור, אנגלית)

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 disables escaping for subsequent Mustache.render calls in email-service.ts, webhook.ts, datadog.ts, and new-relic.ts. An editor-level user can place Slack or Microsoft Teams link syntax in an unrestricted username, trigger a feature event, and inject an attacker-labeled link into a trusted outbound notification channel, while other Mustache sinks remain unescaped until restart. This issue is fixed in version 8.0.3.

02/קישורים3

• github.com/Unleash/unleash/commit/002012cfdbedd2e9b7db9dc83b9f‮…
• github.com/Unleash/unleash/releases/tag/v8.0.3
• github.com/Unleash/unleash/security/advisories/GHSA-w4mq-xh27-‮…