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Vulnerability record · CVE-2026-40472 · published 23 April 2026

CVE-2026-40472: Cross-site scripting vulnerability

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.

9.9 CVSS 3.1 Critical EPSS 0.43% · top 65.6% CWE-79 · Cross-site scripting Awaiting Analysis
9.9CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-40472), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.