{"id":81615,"date":"2026-07-07T03:46:34","date_gmt":"2026-07-07T00:16:34","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-53648-fossbilling-downloadable-product-files-can-be-overwritten-through-filename-collisions\/"},"modified":"2026-07-07T03:46:34","modified_gmt":"2026-07-07T00:16:34","slug":"cve-2026-53648-fossbilling-downloadable-product-files-can-be-overwritten-through-filename-collisions","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-53648-fossbilling-downloadable-product-files-can-be-overwritten-through-filename-collisions\/","title":{"rendered":"CVE-2026-53648 &#8211; FOSSBilling: Downloadable product files can be overwritten through filename collisions"},"content":{"rendered":"<p>CVE ID :CVE-2026-53648<\/p>\n<p>  Published : July 7, 2026, 12:16 a.m. | 1\u00a0hour, 31\u00a0minutes ago<\/p>\n<p>  Description :FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.1, downloadable product files are stored using a deterministic filename-derived path. When an administrator uploads a file for a downloadable product, FOSSBilling stores the file as `md5()` under the uploads directory. Because the stored path depends only on the client-supplied filename, two different downloadable products, or product\/order files, uploaded with the same original filename will resolve to the same stored file path. A later upload can overwrite an earlier upload, causing customers or administrators downloading the earlier product to receive the later file instead. Version 0.8.1 patches the issue. Some workarounds are available. Restrict the `servicedownloadable.manage` permission to fully trusted administrators only. As an operational mitigation, ensure downloadable product files use unique filenames before upload. This reduces accidental collisions but does not fully address the underlying issue.<\/p>\n<p>  Severity: 5.1 | MEDIUM<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-53648 Published : July 7, 2026, 12:16 a.m. | 1\u00a0hour, 31\u00a0minutes ago Description :FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.1, downloadable product files are stored using a deterministic filename-derived path. When an administrator uploads a file for a downloadable product, FOSSBilling stores the file as `md5()` &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-81615","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=81615"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81615\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}