CVE-2026-40471
Hackage CSRF vulnerability
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).
INFO
Published Date :
April 23, 2026, 4:16 p.m.
Last Modified :
April 23, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
74b3a70d-cca6-4d34-9789-e83b222ae3be
Affected Products
The following products are affected by CVE-2026-40471
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 74b3a70d-cca6-4d34-9789-e83b222ae3be |
Solution
- Implement anti-CSRF tokens for all state-changing requests.
- Validate the origin of incoming requests.
- Ensure proper session management.
- Review and restrict unauthenticated actions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40471.
| URL | Resource |
|---|---|
| https://osv.dev/vulnerability/HSEC-2026-0002 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40471 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40471
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40471 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40471 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 74b3a70d-cca6-4d34-9789-e83b222ae3be
Apr. 23, 2026
Action Type Old Value New Value Added 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). Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L Added CWE CWE-352 Added Reference https://osv.dev/vulnerability/HSEC-2026-0002