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.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://osv.dev/vulnerability/HSEC-2026-0004

History

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'}`

Projects

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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 : Received

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

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

Link: CVE-2026-40472

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-79

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