{ "document": { "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/cloudlinux7els/vex/2026/cve-2026-16599-els_os-cloudlinux7els.json" } ], "tracking": { "current_release_date": "2026-10-16T12:58:26Z", "generator": { "date": "2026-10-16T12:58:26Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-16599-ELS_OS-CLOUDLINUX7ELS", "initial_release_date": "2026-08-25T14:17:04Z", "revision_history": [ { "date": "2026-08-25T14:17:04Z", "number": "1", "summary": "Initial version" }, { "date": "2026-10-16T12:58:26Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2026-16599" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "CloudLinux 7", "product": { "name": "CloudLinux 7", "product_id": "CloudLinux-7", "product_identification_helper": { "cpe": "cpe:2.3:o:cloudlinux:cloudlinux:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "CloudLinux" }, { "branches": [ { "category": "product_version", "name": "wget-0:1.14-18el7_6.1.x86_64", "product": { "name": "wget-0:1.14-18el7_6.1.x86_64", "product_id": "wget-0:1.14-18el7_6.1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/wget@1.14-18el7_6.1?arch=x86_64" } } }, { "category": "product_version", "name": "wget-0:1.14-18.el7_6.1.x86_64", "product": { "name": "wget-0:1.14-18.el7_6.1.x86_64", "product_id": "wget-0:1.14-18.el7_6.1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/wget@1.14-18.el7_6.1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Cloud Linux Software, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "product": { "name": "wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "product_id": "wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/wget@1.14-18el7_6.1.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "product": { "name": "wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "product_id": "wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/wget@1.14-18.el7_6.1.tuxcare.els2?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64 as a component of CloudLinux 7", "product_id": "CloudLinux-7:wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64" }, "product_reference": "wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "relates_to_product_reference": "CloudLinux-7" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.14-18el7_6.1.x86_64 as a component of CloudLinux 7", "product_id": "CloudLinux-7:wget-0:1.14-18el7_6.1.x86_64" }, "product_reference": "wget-0:1.14-18el7_6.1.x86_64", "relates_to_product_reference": "CloudLinux-7" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64 as a component of CloudLinux 7", "product_id": "CloudLinux-7:wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64" }, "product_reference": "wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "relates_to_product_reference": "CloudLinux-7" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.14-18.el7_6.1.x86_64 as a component of CloudLinux 7", "product_id": "CloudLinux-7:wget-0:1.14-18.el7_6.1.x86_64" }, "product_reference": "wget-0:1.14-18.el7_6.1.x86_64", "relates_to_product_reference": "CloudLinux-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-16599", "cwe": { "id": "CWE-606", "name": "Unchecked Input for Loop Condition" }, "notes": [ { "category": "description", "text": "GNU wget is vulnerable to denial of service in its FTP OPIE/S-KEY authentication functionality. The server-supplied sequence number from the FTP challenge line is used as an iteration count for an MD5 key-derivation loop without any upper bound validation. A malicious FTP server or a network attacker positioned to intercept FTP traffic can send a crafted OPIE challenge with a sequence number near INT_MAX, causing wget to perform up to approximately 2.1 billion MD5 computations and suspend for some time. The --timeout option does not mitigate this because it applies only to network I/O, not CPU computation.\n\n\nThis issue was fixed in commit e9697d98e7249b0f68a6be040a4f3dcc5bc101fa", "title": "Vulnerability description" } ], "product_status": { "known_affected": [ "CloudLinux-7:wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "CloudLinux-7:wget-0:1.14-18.el7_6.1.x86_64", "CloudLinux-7:wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "CloudLinux-7:wget-0:1.14-18el7_6.1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-16599" }, { "category": "external", "summary": "https://cert.pl/en/posts/2026/08/CVE-2026-16599", "url": "https://cert.pl/en/posts/2026/08/CVE-2026-16599" }, { "category": "external", "summary": "https://gitlab.com/gnuwget/wget", "url": "https://gitlab.com/gnuwget/wget" }, { "category": "external", "summary": "https://gitlab.com/gnuwget/wget/-/commit/e9697d98e7249b0f68a6be040a4f3dcc5bc101fa", "url": "https://gitlab.com/gnuwget/wget/-/commit/e9697d98e7249b0f68a6be040a4f3dcc5bc101fa" } ], "release_date": "2026-08-25T14:17:04Z", "remediations": [ { "category": "no_fix_planned", "date": "2026-10-16T12:11:09.229983Z", "details": "This vulnerability is reachable only through Wget’s legacy FTP OPIE/S‑KEY authentication path (a build‑time optional feature) and is not triggered for HTTP/HTTPS or regular FTP password logins. Exploitation requires user interaction and either a malicious FTP server or active tampering of the plaintext FTP control channel, and the impact is limited to CPU exhaustion of the invoking wget process with no confidentiality or integrity effect and no privilege escalation. Given these narrow, legacy trigger conditions and the DoS‑only impact on a client tool, it can be safely deprioritized in managed enterprise VM/server environments.", "product_ids": [ "CloudLinux-7:wget-0:1.14-18.el7_6.1.tuxcare.els2.x86_64", "CloudLinux-7:wget-0:1.14-18.el7_6.1.x86_64", "CloudLinux-7:wget-0:1.14-18el7_6.1.tuxcare.els1.x86_64", "CloudLinux-7:wget-0:1.14-18el7_6.1.x86_64" ] } ] } ] }