How severe is CVE-2024-51481?

CVE-2024-51481 has a CVSS 4.0 base score of 1.0, rated low severity.

Is CVE-2024-51481 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-51481?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-51481 have an EU (EUVD) identifier?

Yes. CVE-2024-51481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45355.

When was CVE-2024-51481 published?

CVE-2024-51481 was published on 2024-10-31 and last updated on 2026-06-17.

CVE-2024-51481

CVE-2024-51481 is a low-severity vulnerability with a CVSS 4.0 base score of 1.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-693.

Key facts

Severity: Low (CVSS 4.0 base score 1.0)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-45355
Weakness: CWE-693
Published: 2024-10-31
Last modified: 2026-06-17

Description

Nix is a package manager for Linux and other Unix systems. On macOS, built-in builders (such as `builtin:fetchurl`, exposed to users with `import <nix/fetchurl.nix>`) were not executed in the macOS sandbox. Thus, these builders (which are running under the `nixbld*` users) had read access to world-readable paths and write access to world-writable paths outside of the sandbox. This issue is fixed in 2.18.9, 2.19.7, 2.20.9, 2.21.5, 2.22.4, 2.23.4, and 2.24.10. Note that sandboxing is not enabled by default on macOS. The Nix sandbox is not primarily intended as a security mechanism, but as an aid to improve reproducibility and purity of Nix builds. However, sandboxing *can* mitigate the impact of other security issues by limiting what parts of the host system a build has access to.

Frequently asked questions

What is CVE-2024-51481?: Nix is a package manager for Linux and other Unix systems. On macOS, built-in builders (such as `builtin:fetchurl`, exposed to users with `import <nix/fetchurl.nix>`) were not executed in the macOS sandbox. Thus, these builders (which are running under the `nixbld*` users) had read access to world-readable paths and write access to world-writable paths outside of the sandbox. This issue is fixed in 2.18.9, 2.19.7, 2.20.9, 2.21.5, 2.22.4, 2.23.4, and 2.24.10. Note that sandboxing is not enabled by default on macOS. The Nix sandbox is not primarily intended as a security mechanism, but as an aid to improve reproducibility and purity of Nix builds. However, sandboxing *can* mitigate the impact of other security issues by limiting what parts of the host system a build has access to.
How severe is CVE-2024-51481?: CVE-2024-51481 has a CVSS 4.0 base score of 1.0, rated low severity.
Is CVE-2024-51481 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-51481?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-51481 have an EU (EUVD) identifier?: Yes. CVE-2024-51481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45355.
When was CVE-2024-51481 published?: CVE-2024-51481 was published on 2024-10-31 and last updated on 2026-06-17.

References

Other CWE-693 (Protection Mechanism Failure) vulnerabilities

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