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TI-2026-27631 Aliases CVE-2026-35514

Unauthenticated Account Registration via /user/invited Bypasses All Signup Restrictions in Chartbrew

Priority LOW 34CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00243 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
chartbrewchartbrew= 4.9.0—No fix listedCNA
  • chartbrew Vendorchartbrew Affected = 4.9.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:depomo:chartbrew:*:*:*:*:*:*:*:*——chartbrew
  • cpe:2.3:a:depomo:chartbrew:*:*:*:*:*:*:*:* Versions — — ·chartbrew

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35514

References

Other 2

  • TI-2026-46993 Chartbrew: SQL Injection via Missing Backslash Escaping in ClickHouse Variable Substitution CVSS 4.0HIGH 7.9
  • TI-2026-29337 Chartbrew: Missing Authorization in /api/chart/:chart_id/query via team-level refresh toggle CVSS 3.1HIGH 7.5
  • TI-2026-29331 Chartbrew: Incorrect Access Control in public chart and export routes via missing onReport and SharePolicy checks CVSS 3.1HIGH 7.5
  • TI-2026-29560 Chartbrew: Incorrect Access Control in dataset and dataRequest routes via team-scoped permission checks CVSS 3.1HIGH 8.1
  • TI-2026-29336 Chartbrew: Incorrect Access Control in project share policy routes via unbound policy_id CVSS 3.1HIGH 8.1
  • TI-2026-24781 Chartbrew Cross-Tenant Template Export and Secret Disclosure in `GET /team/:team_id/template/generate/:project_id` CVSS 3.1HIGH 7.7
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences