{"id":"CVE-2026-35352","revision":null,"records":[{"revision":"c9bc63fc9bab48b585ea1244bb053c39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-35352","aliases":[],"title":"uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition","description":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.","state":0,"publishedAt":"2026-04-22T16:08:07.422+00:00","modifiedAt":"2026-05-04T17:32:54.701+00:00","affected":[{"ecosystem":"https://github.com/uutils","name":"coreutils","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Uutils\",\n                    \"product\": \"coreutils\",\n                    \"platforms\": [\n                        \"Linux\",\n                        \"Unix\",\n                        \"macOS\"\n                    ],\n                    \"collectionURL\": \"https://github.com/uutils\",\n                    \"packageName\": \"coreutils\",\n                    \"repo\": \"https://github.com/uutils/coreutils\",\n                    \"defaultStatus\": \"affected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7,"severity":"HIGH"}],"references":["https://github.com/uutils/coreutils/issues/10020"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-35352","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-35352","identifiers":["CVE-2026-35352"]},"retained":false,"historicalAffected":[]},{"revision":"77cd19e1accb474b90f29da8a05b1e6f","observedAt":"2026-11-01T06:08:45.896+00:00","statement":{"source":"euvd","id":"EUVD-2026-24986","aliases":["CVE-2026-35352"],"title":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent di…","description":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7,"severity":null}],"references":["https://github.com/uutils/coreutils/issues/10020"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-24986","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 22, 2026, 4:08:07 PM","dateUpdated":"May 4, 2026, 5:32:54 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-24986","identifiers":["EUVD-2026-24986","CVE-2026-35352"]},"retained":false,"historicalAffected":[]},{"revision":"cc4179f6b12144869f544fcbd2a1e5d3","observedAt":"2026-10-27T09:03:12.132+00:00","statement":{"source":"nvd","id":"CVE-2026-35352","aliases":[],"title":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent di…","description":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.","state":0,"publishedAt":"2026-04-22T17:16:37.597+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security@ubuntu.com · Secondary","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7,"severity":"HIGH"}],"references":["https://github.com/uutils/coreutils/issues/10020","http://www.openwall.com/lists/oss-security/2026/05/04/4","http://www.openwall.com/lists/oss-security/2026/05/04/5","http://www.openwall.com/lists/oss-security/2026/05/04/6"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-35352","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-367"],"productCriteria":["cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*"],"sourceDates":{"published":"2026-04-22T17:16:37.597","lastModified":"2026-10-26T21:10:00.170"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-35352","identifiers":["CVE-2026-35352"]},"retained":false,"historicalAffected":[]},{"revision":"193a19ab9a2649ccaff994f01f3d0a55","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-9gh9-hwpr-rvqq","aliases":["CVE-2026-35352"],"title":"uutils coreutils has a Time-of-Check to Time-of-Use (TOCTOU) race condition","description":"A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.","state":0,"publishedAt":"2026-04-22T18:31:45+00:00","modifiedAt":"2026-09-10T03:51:01.4324451+00:00","affected":[{"ecosystem":"crates.io","name":"coreutils","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"0.8.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-35352","https://github.com/uutils/coreutils/issues/10020","https://github.com/uutils/coreutils","http://www.openwall.com/lists/oss-security/2026/05/04/4","http://www.openwall.com/lists/oss-security/2026/05/04/5","http://www.openwall.com/lists/oss-security/2026/05/04/6"],"sourceUrl":"https://github.com/advisories/GHSA-9gh9-hwpr-rvqq","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-9gh9-hwpr-rvqq","identifiers":["GHSA-9gh9-hwpr-rvqq","CVE-2026-35352"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-01T16:57:22.1666445+00:00","complete":true,"records":1766,"lastAttemptAt":"2026-11-01T16:57:22.1666445+00:00","lastSuccessAt":"2026-11-01T16:57:22.3213113+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:22.3213122+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-aece262bb10a694367a43c24d730aa8e8dc171723eaec4c15cdd32f04bda103f-585642db5fd5f5a045fdfca4b18984aef177ee17d65cc7f04f45379403194285","complete":true,"records":417664,"lastAttemptAt":"2026-11-01T16:57:21.0753446+00:00","lastSuccessAt":"2026-11-01T16:57:21.0470885+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:21.0753446+00:00","snapshotPublishedAt":"2026-11-01T16:32:09+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-a3073dd3364f43318c8658d6b675f6d0","complete":false,"records":13568,"lastAttemptAt":"2026-11-01T17:07:58.8881102+00:00","lastSuccessAt":"2026-11-01T17:07:58.994588+00:00","error":null,"lastVerifiedAt":"2026-11-01T17:07:58.994588+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-01T16:57:22.1666445+00:00","complete":true,"records":1095,"lastAttemptAt":"2026-11-01T16:57:22.1666445+00:00","lastSuccessAt":"2026-11-01T16:57:22.3220592+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:22.3220593+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-86ffd04e61a14524b2bdedd1ba2e339d","complete":true,"records":13580,"lastAttemptAt":"2026-11-01T16:57:47.7627092+00:00","lastSuccessAt":"2026-11-01T16:57:47.759+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:47.759+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13637,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-21dcd6662970dfea02e4ea60ee637115e8d92664947484d2b9276b3f6568a84f","complete":true,"records":9815,"lastAttemptAt":"2026-11-01T16:57:21.7362922+00:00","lastSuccessAt":"2026-10-30T23:47:34.1817587+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:21.7362922+00:00","snapshotPublishedAt":"2026-10-30T23:33:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-11-01T16:57:21.2364439+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:21.2364439+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f95f76cd406ae5bae3de632ad37fd2d5160b44f5e6b51748ac6f8f0c0c88e72b","complete":true,"records":3028,"lastAttemptAt":"2026-11-01T16:57:22.1252506+00:00","lastSuccessAt":"2026-10-30T23:47:38.4914494+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:22.1252506+00:00","snapshotPublishedAt":"2026-10-30T23:18:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-55acacd40a7aab88cf530cfddf98233a5d800cfc6bb1883653ecf5bee50f4426","complete":true,"records":230996,"lastAttemptAt":"2026-11-01T16:57:21.6223649+00:00","lastSuccessAt":"2026-11-01T09:06:49.6961926+00:00","error":null,"lastVerifiedAt":"2026-11-01T16:57:21.6223649+00:00","snapshotPublishedAt":"2026-11-01T08:33:39+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}