What’s Vulnerable › Vulnerabilities
CVE-2026-40472: Hackage package metadata stored XSS vulnerability
- Severity: critical (CVSS 9.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-23 · updated 2026-06-17
- Weakness: CWE-79
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.
References
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