What’s Vulnerable › Vulnerabilities

CVE-2026-35514: Unauthenticated Account Registration via /user/invited Bypasses All Signup Restrictions in Chartbrew

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-30 · updated 2026-06-17
• Weakness: CWE-306

Description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, the endpoint POST /user/invited does not validate any invite token, authentication header, or session. Any unauthenticated attacker can call this endpoint directly to create a fully active account and receive a valid JWT — even when the instance has existing users and signupRestricted is enabled. This bypass is distinct from the normal registration endpoint (POST /user) which enforces signupRestricted and sets active: false pending verification. This issue has been patched in version 5.0.0.

Affected products

• chartbrew: = 4.9.0

References

• https://github.com/chartbrew/chartbrew/releases/tag/v5.0.0
• https://github.com/chartbrew/chartbrew/security/advisories/GHSA-g47g-v5cp-j8hp

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