{"id":"CVE-2026-18379","aliases":["EUVD-2026-124643","GHSA-73xf-6738-4xhx","RHSA-2026:96082","RLSA-2026:96082"],"status":"published","title":"Yggdrasil-worker-package-manager: yggdrasil-worker-package-manager: path traversal via unsanitized repo name in addrepo/removerepo","description":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this issue to achieve arbitrary file modification or potential privilege escalation. The vulnerability exists because repository management operations fail to sanitize directory traversal sequences (such as '../') within repository names. By supplying a crafted repository name, an attacker can manipulate the root-level worker process into creating or deleting files outside the intended directory, compromising host system integrity.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-13","score":0.00808,"percentile":0.57391,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-11-12T18:49:34Z","modified":"2026-11-13T19:07:35Z","fixes":[{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager","fixed_in":["0:0.2.3-7.el10_2.9"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager-debuginfo","fixed_in":["0:0.2.3-7.el10_2.9"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager-debugsource","fixed_in":["0:0.2.3-7.el10_2.9"],"sources":["osv"]},{"ecosystem":"Rocky Linux:10","package":"yggdrasil-worker-package-manager","fixed_in":["0:0.2.3-7.el10_2.9"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.2.3-7.el10_2.9"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.2.3-7.el10_2.9"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"yggdrasil-worker-package-manager-debugsource","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.2.3-7.el10_2.9"}]}]},{"source":"osv","ecosystem":"Rocky Linux:10","package":"yggdrasil-worker-package-manager","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.2.3-7.el10_2.9"}]}]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:96082","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-18379","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546571","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18379","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-73xf-6738-4xhx"},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_96082.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18379","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:96082","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-18379","title":"Yggdrasil-worker-package-manager: yggdrasil-worker-package-manager: path traversal via unsanitized repo name in addrepo/removerepo","description":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this issue to achieve arbitrary file modification or potential privilege escalation. The vulnerability exists because repository management operations fail to sanitize directory traversal sequences (such as '../') within repository names. By supplying a crafted repository name, an attacker can manipulate the root-level worker process into creating or deleting files outside the intended directory, compromising host system integrity.","status":"published","published":"2026-11-12T18:49:34.253Z","modified":"2026-11-13T19:07:35.156Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-13T20:34:17.615341Z"}],"euvd":[{"id":"EUVD-2026-124643","description":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this issue to achieve arbitrary file modification or potential privilege escalation. The vulnerability exists because repository management operations fail to sanitize directory traversal sequences (such as '../') within repository names. By supplying a crafted repository name, an attacker can manipulate the root-level worker process into creating or deleting files outside the intended directory, compromising host system integrity.","status":"published","published":"2026-11-12T18:49:34Z","modified":"2026-11-13T19:07:35Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-13T00:36:24.879993Z"}],"ghsa":[{"id":"GHSA-73xf-6738-4xhx","title":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this...","description":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this issue to achieve arbitrary file modification or potential privilege escalation. The vulnerability exists because repository management operations fail to sanitize directory traversal sequences (such as '../') within repository names. By supplying a crafted repository name, an attacker can manipulate the root-level worker process into creating or deleting files outside the intended directory, compromising host system integrity.","status":"published","published":"2026-11-12T21:31:26Z","modified":"2026-11-13T00:32:59Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-13T00:44:37.510355Z"}],"nvd":[{"id":"CVE-2026-18379","description":"A flaw was found in yggdrasil-worker-package-manager. An authenticated attacker can exploit this issue to achieve arbitrary file modification or potential privilege escalation. The vulnerability exists because repository management operations fail to sanitize directory traversal sequences (such as '../') within repository names. By supplying a crafted repository name, an attacker can manipulate the root-level worker process into creating or deleting files outside the intended directory, compromising host system integrity.","status":"published","published":"2026-11-12T19:17:04.04Z","modified":"2026-11-13T19:19:32.31Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-13T01:33:42.076678Z"}],"osv":[{"id":"RHSA-2026:96082","title":"Red Hat Security Advisory: yggdrasil-worker-package-manager security update","status":"published","published":"2026-11-13T18:50:08Z","modified":"2026-11-13T19:04:03.785774749Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-13T19:24:58.069502Z"},{"id":"RLSA-2026:96082","title":"Moderate: yggdrasil-worker-package-manager security update","description":"yggdrasil-worker-package-manager is a simple package manager yggd worker. It knows how to install and remove packages, add, remove, enable and disable repositories, and does rudimentary detection of the host it is running on to guess the package manager to use. It only installs packages that match one of the provided allow-pattern regular expressions.\n\nSecurity Fix(es):\n\n* yggdrasil-worker-package-manager: yggdrasil-worker-package-manager: path traversal via unsanitized repo name in AddRepo/RemoveRepo (CVE-2026-18379)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-11-13T02:58:56.906908Z","modified":"2026-11-13T03:30:02.622643118Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-13T03:58:46.932283Z"}]}}