CRITICAL: CVE-2026-40472 (CVSS 9.9) — multiple products

CVE: CVE-2026-40472

CVSS: 9.9 (3.1) — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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.

Verified Sources

NVD entry
GitHub Advisory
MITRE

References

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

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical

Validated sources

[1]NVD
[2]GitHub Advisory
[3]MITRE