{"id":75743,"date":"2026-01-08T02:45:50","date_gmt":"2026-01-07T23:15:50","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-21857-redaxo-has-path-traversal-in-backup-addon-leading-to-arbitrary-file-read\/"},"modified":"2026-01-08T02:45:50","modified_gmt":"2026-01-07T23:15:50","slug":"cve-2026-21857-redaxo-has-path-traversal-in-backup-addon-leading-to-arbitrary-file-read","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-21857-redaxo-has-path-traversal-in-backup-addon-leading-to-arbitrary-file-read\/","title":{"rendered":"CVE-2026-21857 &#8211; Redaxo has Path Traversal in Backup Addon Leading to Arbitrary File Read"},"content":{"rendered":"<p>CVE ID : CVE-2026-21857<\/p>\n<p>Published :  Jan. 7, 2026, 11:15 p.m. | 1\u00a0hour, 12\u00a0minutes ago<\/p>\n<p>Description : REDAXO is a PHP-based content management system. Prior to version 5.20.2, authenticated users with backup permissions can read arbitrary files within the webroot via path traversal in the Backup addon&#8217;s file export functionality. The Backup addon does not validate the `EXPDIR` POST parameter against the UI-generated allowlist of permitted directories. An attacker can supply relative paths containing `..\/` sequences (or even absolute paths inside the document root) to include any readable file in the generated `.tar.gz` archive. Version 5.20.2 fixes this issue.<\/p>\n<p>Severity: 8.3 | HIGH<\/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-2026-21857 Published : Jan. 7, 2026, 11:15 p.m. | 1\u00a0hour, 12\u00a0minutes ago Description : REDAXO is a PHP-based content management system. Prior to version 5.20.2, authenticated users with backup permissions can read arbitrary files within the webroot via path traversal in the Backup addon&#8217;s file export functionality. The Backup addon does not &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-75743","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/75743","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=75743"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/75743\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=75743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=75743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=75743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}