CVE-2026-40471CWE-352

Hackage CSRF vulnerability

Critical · published April 23, 2026

CVSS v3.1
9.6
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

hackage-server lacked Cross-Site Request Forgery (CSRF) protection across its endpoints. Scripts on foreign sites could trigger requests to hackage server, possibly abusing latent credentials to upload packages or perform other administrative actions. Some unauthenticated actions could also be abused (e.g. creating new user accounts).

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00182 · 7.4th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2026-04-23T14:56Z
EPSS history
Timeline
  • 23 APR 14:56Z
    Hackage CSRF vulnerability
    cvelistv5