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CVE-2026-63004

5.5 · MEDIUM

Unleash is an open-source feature management platform.

Published Aug 21, 2026CWE-918EPSS 0.39%

Overview

CVE-2026-63004 is a medium-severity vulnerability. It was published on August 21, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1GitHubgithub.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1GitHubgithub.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806dGitHubgithub.com/Unleash/unleash/releases/tag/v7.5.2GitHubgithub.com/Unleash/unleash/releases/tag/v7.6.5GitHubgithub.com/Unleash/unleash/releases/tag/v8.0.2GitHubgithub.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fjGitHubgithub.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63004?

CVE-2026-63004 is a medium-severity vulnerability. It was published on August 21, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-63004?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-63004?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63004?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63004 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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