{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-52991 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2025-52991 is a low-severity vulnerability in NixOS Nix, published on 27 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-52991 and fix it if it is affected.\n\nWhat it is: CVE-2025-52991 is a low-severity vulnerability in NixOS Nix, published on 27 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-52991 in the wild and no public exploit code.\n\nAffected product: NixOS Nix. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-52991/ (Markdown: https://insights.sbomify.com/CVE-2025-52991/index.md)","id":"CVE-2025-52991","markdown":"https://insights.sbomify.com/CVE-2025-52991/index.md","name":"CVE-2025-52991","record":{"aliases":["DEBIAN-CVE-2025-52991","GHSA-8vh4-gppm-m3jm","UBUNTU-CVE-2025-52991"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Nix package manager","requires_auth":"none","summary":"Standard users can manipulate world-writable temporary build directories in Nix, Lix, and Guix to cause unauthorized actions or data manipulation.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":3.2,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-276","name":"Incorrect Default Permissions"}],"description":"The Nix, Lix, and Guix package managers default to using temporary build directories in a world-readable and world-writable location. This allows standard users to deceive the package manager into using directories with pre-existing content, potentially leading to unauthorized actions or data manipulation. This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Race condition in Nix","id":"CVE-2025-52991","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2025"},"n_packages":0,"n_references":6,"next":{"headline":"Misconfiguration in Nix","id":"CVE-2025-52992"},"packages":[],"prev":{"headline":"Junos OS and Junos OS Evolved: Annotate configuration command can be used to change the configuration","id":"CVE-2025-52989"},"products":["Nix"],"published":"2025-06-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-06-27","vendors":["NixOS"]},"summary":"Standard users can manipulate world-writable temporary build directories in Nix, Lix, and Guix to cause unauthorized actions or data manipulation.","url":"https://insights.sbomify.com/CVE-2025-52991/"}