{"id":81605,"date":"2026-07-07T01:08:49","date_gmt":"2026-07-06T21:38:49","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-43921-fossbilling-vulnerable-to-arbitrary-php-code-injection-via-unescaped-config-serialization\/"},"modified":"2026-07-07T01:08:49","modified_gmt":"2026-07-06T21:38:49","slug":"cve-2026-43921-fossbilling-vulnerable-to-arbitrary-php-code-injection-via-unescaped-config-serialization","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-43921-fossbilling-vulnerable-to-arbitrary-php-code-injection-via-unescaped-config-serialization\/","title":{"rendered":"CVE-2026-43921 &#8211; FOSSBilling vulnerable to arbitrary PHP code injection via unescaped config serialization"},"content":{"rendered":"<p>CVE ID :CVE-2026-43921<\/p>\n<p>  Published : July 6, 2026, 9:38 p.m. | 9\u00a0minutes ago<\/p>\n<p>  Description :FOSSBilling is a free, open-source billing and client management system. Versions 0.6.10 through 0.7.2 have a PHP code injection vulnerability in FOSSBilling&#8217;s `Config::prettyPrintArrayToPHP()` method. When configuration values are updated, string values are written into `config.php` without escaping single quotes. Because `config.php` is loaded via a bare `include` on every HTTP request, an attacker with admin privileges can inject arbitrary PHP code that executes on every subsequent request. Version 0.8.0 contains a patch. Some workarounds are available. Restrict admin access to trusted personnel only; audit `config.php` for unexpected PHP code; and\/ or at the reverse proxy\/WAF level, restrict access to admin API endpoints that modify configuration.<\/p>\n<p>  Severity: 0.0 | NA<\/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-2026-43921 Published : July 6, 2026, 9:38 p.m. | 9\u00a0minutes ago Description :FOSSBilling is a free, open-source billing and client management system. Versions 0.6.10 through 0.7.2 have a PHP code injection vulnerability in FOSSBilling&#8217;s `Config::prettyPrintArrayToPHP()` method. When configuration values are updated, string values are written into `config.php` without escaping single quotes. Because `config.php` &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-81605","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81605","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=81605"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81605\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}