CVE-2026-40472

Published: Apr 23, 2026

Modified: Apr 23, 2026

PUBLISHED

CVSS v3.1

9.9

CRITICAL

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.

Vendor	Product	Versions
Unknown	hackage-server	affected `0.1 - < *`

Weaknesses (CWE)

CWE-79

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

References

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

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CVE-2026-40472

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References