CVE-2026-40472 - Vulnerability Details - OpenCVE

In hackage-server, user-controlled metadata from .cabal files are rendered into HTML href attributes without proper sanitization, enabling stored Cross-Site Scripting (XSS) attacks.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Hackage-server	Hackage-server

No data.

No data.

References

Link	Providers
https://www.spirityenterprise.com/pentest
https://osv.dev/vulnerability/HSEC-2026-0004

History

Tue, 28 Apr 2026 09:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Hackage-server Hackage-server hackage-server
Vendors & Products		Hackage-server Hackage-server hackage-server

Thu, 23 Apr 2026 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Thu, 23 Apr 2026 15:45:00 +0000

Type	Values Removed	Values Added
Description		In hackage-server, user-controlled metadata from .cabal files are rendered into HTML href attributes without proper sanitization, enabling stored Cross-Site Scripting (XSS) attacks.
Title		Hackage package metadata stored XSS vulnerability
Weaknesses		CWE-79
References		https://osv.dev/vulnerability/HSEC-2026-0004
Metrics		cvssV3_1 `{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L'}`

MITRE

Status: PUBLISHED

Assigner: redhat-cnalr

Published: 2026-04-23T15:00:09.063Z

Updated: 2026-04-23T16:22:06.841Z

Reserved: 2026-04-13T15:23:17.068Z

Link: CVE-2026-40472

Vulnrichment

Updated: 2026-04-23T16:15:44.107Z

NVD

Status : Awaiting Analysis

Published: 2026-04-23T16:16:25.753

Modified: 2026-04-24T14:41:55.890

Link: CVE-2026-40472

Redhat

No data.

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