CVE-2026-40603Public exploitNetwork attack vector

Cross-project dashboard disclosure via same-team authorization bypass

Published Apr 30, 2026 · Updated Apr 30, 2026

Improper access control in Chartbrew 4.9.0 allows remote authenticated users to read restricted dashboard data through a legacy API route. The /api/project/dashboard/:brewName handler accepts any same-team role, omits the project-membership check, and returns the raw project instead of its sanitized copy. Same-team membership and knowledge or guessing of brewName are required; exposure includes report content, share settings, and the stored report password.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Chartbrew 4.9.0 allows remote authenticated users to read restricted dashboard data through a legacy API route. The /api/project/dashboard/:brewName handler accepts any same-team role, omits the project-membership check, and returns the raw project instead of its sanitized copy. Same-team membership and knowledge or guessing of brewName are required; exposure includes report content, share settings, and the stored report password.

The record

CVE
CVE-2026-40603
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Chartbrew
Product
Chartbrew
Classifications
CWE-284, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 4.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chartbrew · Chartbrewversion== 4.9.0

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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