Description
Unleash is an open-source feature management platform. Prior to 7.5.2, 7.6.5, and 8.0.2, the addon and integration subsystem passes the operator-controlled parameters.url value from src/lib/addons/webhook.ts and the Slack, Microsoft Teams, Datadog, and New Relic integrations to Addon.fetchRetry in src/lib/addons/addon.ts without restricting loopback, link-local, private, or cloud metadata addresses. An authenticated actor with the root CREATE_ADDON or UPDATE_ADDON permission can cause the server to send requests from inside its network boundary, use integration event status as a blind probing oracle, forward Authorization, customHeaders, or DD-API-KEY values to an attacker-observed host, and deliver the feature-event JSON body to internal services. This issue is fixed in versions 7.5.2, 7.6.5, and 8.0.2.
References8
- github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf1…
- github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fc…
- github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf…
- github.com/Unleash/unleash/releases/tag/v7.5.2
- github.com/Unleash/unleash/releases/tag/v7.6.5
- github.com/Unleash/unleash/releases/tag/v8.0.2
- github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-7…
- github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-7…
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 33 · as of 10 November 2026
- CWE
- CWE-918
Could this be exploited in your environment?
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