{ "document": { "aggregate_severity": { "text": "Medium" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos8.5els/vex/2026/cve-2026-23745-els_os-centos8_5els.json" } ], "tracking": { "current_release_date": "2026-02-26T09:28:07Z", "generator": { "date": "2026-02-26T09:28:07Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-23745-ELS_OS-CENTOS8.5ELS", "initial_release_date": "2026-01-16T22:16:00Z", "revision_history": [ { "date": "2026-01-16T22:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-02-26T09:28:07Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2026-23745" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8.5", "product": { "name": "Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8.5:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" }, { "branches": [ { "category": "product_version", "name": "tar-2:1.30-5.el8.x86_64", "product": { "name": "tar-2:1.30-5.el8.x86_64", "product_id": "tar-2:1.30-5.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/tar@1.30-5.el8?arch=x86_64&epoch=2" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "tar-2:1.30-5.el8.tuxcare.els1.x86_64", "product": { "name": "tar-2:1.30-5.el8.tuxcare.els1.x86_64", "product_id": "tar-2:1.30-5.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/tar@1.30-5.el8.tuxcare.els1?arch=x86_64&epoch=2" } } }, { "category": "product_version", "name": "tar-2:1.30-5.el8.tuxcare.els2.x86_64", "product": { "name": "tar-2:1.30-5.el8.tuxcare.els2.x86_64", "product_id": "tar-2:1.30-5.el8.tuxcare.els2.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/tar@1.30-5.el8.tuxcare.els2?arch=x86_64&epoch=2" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "tar-2:1.30-5.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els1.x86_64" }, "product_reference": "tar-2:1.30-5.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "tar-2:1.30-5.el8.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:tar-2:1.30-5.el8.x86_64" }, "product_reference": "tar-2:1.30-5.el8.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "tar-2:1.30-5.el8.tuxcare.els2.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els2.x86_64" }, "product_reference": "tar-2:1.30-5.el8.tuxcare.els2.x86_64", "relates_to_product_reference": "CentOS-8.5" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-23745", "cwe": { "id": "CWE-22", "name": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')" }, "notes": [ { "category": "description", "text": "node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_affected": [ "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els1.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els2.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-23745" }, { "category": "external", "summary": "https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e", "url": "https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e" }, { "category": "external", "summary": "https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97", "url": "https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97" } ], "release_date": "2026-01-16T22:16:00Z", "remediations": [ { "category": "no_fix_planned", "details": "This vulnerability is only reachable when an application explicitly extracts a malicious tarball with node-tar, making it a local, user‑interaction issue with no remote trigger and no elevation of privilege. Any overwrite is constrained by the Node.js process’s existing OS permissions; when run without root, attempts to target protected paths (e.g., /etc) will fail. Given these preconditions and the impact being bounded to what that process can already modify, it is reasonable to deprioritize in centrally managed server/VM environments.", "product_ids": [ "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els1.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els2.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N", "version": "3.1" }, "products": [ "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els1.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.tuxcare.els2.x86_64", "CentOS-8.5:tar-2:1.30-5.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }