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CVE-2026-40472

CRITICAL
9.9
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-40472
State
PUBLISHED
Assigner
redhat-cnalr
Reserved
2026-04-13 15:23 UTC
Published
2026-04-23 15:00 UTC
Last updated
2026-04-23 16:22 UTC
Primary CWE
CWE-79
CWE-79 Improper neutralization of input during web page gene…
Sources
cve.org  ·  NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
— — — 0.1 < *
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.9 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
References (1)
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