{"id":79683,"date":"2026-06-13T00:24:30","date_gmt":"2026-06-12T20:54:30","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-53607-apostrophecms-file-pretty-url-vulnerable-to-unauthenticated-ssrf-via-host-header\/"},"modified":"2026-06-13T00:24:30","modified_gmt":"2026-06-12T20:54:30","slug":"cve-2026-53607-apostrophecms-file-pretty-url-vulnerable-to-unauthenticated-ssrf-via-host-header","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-53607-apostrophecms-file-pretty-url-vulnerable-to-unauthenticated-ssrf-via-host-header\/","title":{"rendered":"CVE-2026-53607 &#8211; @apostrophecms\/file pretty-URL Vulnerable to Unauthenticated SSRF via Host header"},"content":{"rendered":"<p>CVE ID :CVE-2026-53607<\/p>\n<p>  Published : June 12, 2026, 8:54 p.m. | 29\u00a0minutes ago<\/p>\n<p>  Description :ApostropheCMS is an open-source Node.js content management system. In versions up to and including 4.30.0, when `prettyUrls: true` is enabled on `@apostrophecms\/file` (a documented SEO feature for serving uploaded files at clean URLs), the public pretty-URL handler builds the upstream URL using the raw `Host` HTTP request header. That URL is then `fetch`&#8217;ed and the response body + headers are streamed straight back to the requester. Because `Host` is fully attacker-controlled, an unauthenticated remote attacker can pivot the apostrophe process to issue outbound HTTP requests against any host it can reach on the private network. The path component is constrained to `\/uploads\/attachments\/-.` (built from a local-DB lookup), which keeps the impact narrow: cross-instance data exfiltration is neutralized by cuid uniqueness, but blind-SSRF residuals remain (network-topology mapping via response-code \/ timing differences and verbose proxy\/WAF 404 body disclosure). As of time of publication, no known patched versions exist.<\/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-2026-53607 Published : June 12, 2026, 8:54 p.m. | 29\u00a0minutes ago Description :ApostropheCMS is an open-source Node.js content management system. In versions up to and including 4.30.0, when `prettyUrls: true` is enabled on `@apostrophecms\/file` (a documented SEO feature for serving uploaded files at clean URLs), the public pretty-URL handler builds the upstream URL &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-79683","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79683","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=79683"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79683\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=79683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=79683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=79683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}