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

Quick assessment

Affected
chartbrew chartbrew
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

chartbrew是Chartbrew开源的一个数据可视化与仪表盘构建工具。 chartbrew 4.9.0版本存在访问控制错误漏洞，该漏洞源于端点POST /user/invited未验证任何邀请令牌、身份验证标头或会话，可能导致未经身份验证的攻击者创建完全活跃的账户并接收有效JWT。

CVSS 6.5 · Medium EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1136.001 · Local Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
chartbrew chartbrew = 4.9.0 affected
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I. Basic Information for CVE-2026-35514

Vulnerability Information
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Vulnerability Title
Unauthenticated Account Registration via /user/invited Bypasses All Signup Restrictions in Chartbrew
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
chartbrew 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
chartbrew是Chartbrew开源的一个数据可视化与仪表盘构建工具。 chartbrew 4.9.0版本存在访问控制错误漏洞，该漏洞源于端点POST /user/invited未验证任何邀请令牌、身份验证标头或会话，可能导致未经身份验证的攻击者创建完全活跃的账户并接收有效JWT。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
chartbrew chartbrew = 4.9.0 -

II. Public POCs for CVE-2026-35514

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III. Intelligence Information for CVE-2026-35514

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Patches & Fixes for CVE-2026-35514 (1)

Vendor Advisories for CVE-2026-35514 (1)

Same Patch Batch · chartbrew · 2026-04-30 · 6 CVEs total

CVE-2026-40600 8.1 HIGH Chartbrew: Incorrect Access Control in project share policy routes via unbound policy_id
CVE-2026-40904 8.1 HIGH Chartbrew: Incorrect Access Control in dataset and dataRequest routes via team-scoped perm
CVE-2026-40601 7.5 HIGH Chartbrew: Missing Authorization in /api/chart/:chart_id/query via team-level refresh togg
CVE-2026-40595 7.5 HIGH Chartbrew: Incorrect Access Control in public chart and export routes via missing onReport
CVE-2026-40603 6.5 MEDIUM Chartbrew: Incorrect Access Control in /api/project/dashboard/:brewName via same-team over

IV. Related Vulnerabilities

Same product: chartbrew
Same vendor: chartbrew
Same weakness: CWE-306

V. Comments for CVE-2026-35514

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