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TI-2026-86138 Aliases CVE-2026-68935

Server-side request forgery in Chartbrew API connections

Priority MEDIUM 40CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Chartbrew versions 4.8.5 through 5.2.2 are affected. API connection create and update operations accept a user-supplied allowPrivateHost field, which bypasses private and reserved-network destination restrictions (CWE-918). An authenticated user who can manage API connections can make the Chartbrew server send requests to internal HTTP services, potentially disclosing information or triggering unauthorized actions. The per-connection setting overrides CB_ALLOW_PRIVATE_NETWORK_CALLS, and recognized cloud metadata endpoints remain blocked.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Chartbrew is an open-source web application for creating charts from databases and APIs. In versions 4.8.5 through 5.2.2, API connection creation and update operations accept the internal  allowPrivateHost  field from user input. An authenticated user with permission to manage API connections can enable this field to bypass private and reserved-network destination restrictions. An upgrade migration also enables the override on pre-existing API connections. The per-connection setting takes precedence over  CB_ALLOW_PRIVATE_NETWORK_CALLS , so disabling that instance option does not protect connections with the override enabled. Successful exploitation allows requests to internal HTTP services reachable from the Chartbrew server, potentially disclosing information or triggering unauthorized actions depending on the target service. Recognized cloud metadata endpoints remain separately blocked. This issue is fixed in version 5.2.3.

Why it matters now

EPSS 0.00553 46th percentileScored 2026-11-07
Fix Fixed chartbrew (chartbrew): 5.2.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
chartbrewchartbrewbefore 5.2.35.2.3Patch availableCNA
  • chartbrew Vendorchartbrew Affected before 5.2.3 Fixed in 5.2.3 Patch available 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

Upgrade Chartbrew to version 5.2.3, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA chartbrew (chartbrew) Fixed in 5.2.3

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-68935

References

Other 3

  • 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