Critical severity9.9NVD Advisory· Published Apr 23, 2026· Updated Apr 24, 2026

CVE-2026-40472

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

RubyGems/Hackage Serverinferred
Package: https://rubygems.org/gems/hackage-server
osv-coords
pkg:hackage/hackage-server
Range: >= 0.1

Patches

Vulnerability mechanics

References

osv.dev/vulnerability/HSEC-2026-0004nvd

News mentions

No linked articles in our index yet.

cvss	0.643
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000