CVE-2026-40471

CRITICAL EPSS 3.5%

Published Apr 23, 20262mo ago · Modified Jun 17, 20262w ago

9.6 CVSS 3.1

Critical

Published Apr 23, 2026 2mo ago

Last Modified Jun 17, 2026 2w ago

Description

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).

CVSS Details

Base Score

9.6

Exploitability

2.8

Impact

6.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Changed

Confidentiality High

Integrity High

Availability Low

Threat Intelligence

EPSS Exploit Probability

3.5% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-352 Cross-Site Request Forgery (CSRF) Authentication

References 1

osv.dev https://osv.dev/vulnerability/HSEC-2026-0002

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.