CVE-2026-27603

Chartbrew: Unauthenticated Chart Filter Endpoint: POST /project/:project_id/chart/:chart_id/filter missing verifyToken + checkPermissions

HIGH
7.5
CVSS Score
Published: March 6, 2026 at 04:07 AM UTC
Updated: June 17, 2026 at 10:27 AM UTC
2 products affected across 2 vendorsChartbrewChartbrew

Using chartbrew by chartbrew?

Get instant alerts when new vulnerabilities affect chartbrew - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to version 4.8.4, the chart filter endpoint POST /project/:project_id/chart/:chart_id/filter is missing both verifyToken and checkPermissions middleware, allowing unauthenticated users to access chart data from any team/project. This issue has been patched in version 4.8.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.8.4
v < 4.8.4
Affected range stops below 4.8.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_CONFIRMExploitMitigationVendor Advisory
Source: cverecord
https://github.com/chartbrew/chartbrew/security/advisories/GHSA-9fhr-5vvc-p455
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/chartbrew/chartbrew/releases/tag/v4.8.4

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-306

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card