Vulnerability · Published Apr 30, 2026 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity missing authentication in chartbrew from chartbrew. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 84.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
chartbrew	chartbrew	= 4.9.0

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References

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