CVE-2024-32657

Name: CVE-2024-32657
Creator: NVD / NIST
Published: 2024-04-22T23:15:50.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2024-32657 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Hydra is a Continuous Integration service for Nix based projects. Attackers can execute arbitrary code in the browser context of Hydra and execute authenticated HTTP requests. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Hydra is a Continuous Integration service for Nix based projects. Attackers can execute arbitrary code in the browser context of Hydra and execute authenticated HTTP requests. The abused feature allows Nix builds to specify files that Hydra serves to clients. One use of this functionality is serving NixOS `.iso` files. The issue is only with html files served by Hydra. The issue has been patched on https://hydra.nixos.org around 2024-04-21 14:30 UTC. The nixpkgs package were fixed in unstable and 23.11. Users with custom Hydra packages can apply the fix commit to their local installations. The vulnerability is only triggered when opening HTML build artifacts, so not opening them until the vulnerability is fixed works around the issue.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.46%

36.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nixos	Hydra	< 23.11

References

https://github.com/NixOS/hydra/commit/b72528be5074f3e62e9ae2c2ae8ef9c07a0b4dd3Patch
https://github.com/NixOS/hydra/security/advisories/GHSA-2p75-6g9f-pqgxVendor Advisory
https://github.com/NixOS/nixpkgs/pull/306017Issue Tracking
https://github.com/NixOS/nixpkgs/pull/306018Issue Tracking
https://github.com/NixOS/hydra/commit/b72528be5074f3e62e9ae2c2ae8ef9c07a0b4dd3Patch
https://github.com/NixOS/hydra/security/advisories/GHSA-2p75-6g9f-pqgxVendor Advisory
https://github.com/NixOS/nixpkgs/pull/306017Issue Tracking
https://github.com/NixOS/nixpkgs/pull/306018Issue Tracking

Timeline

Published: Apr 22, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-32657?

How severe is CVE-2024-32657?

CVE-2024-32657 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2024-32657?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-32657?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST