{"id":82103,"date":"2026-07-16T22:46:50","date_gmt":"2026-07-16T19:16:50","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-53536-activepieces-cross-tenant-file-download-via-missing-jwt-audience-check-on-step-files-signed-url\/"},"modified":"2026-07-16T22:46:50","modified_gmt":"2026-07-16T19:16:50","slug":"cve-2026-53536-activepieces-cross-tenant-file-download-via-missing-jwt-audience-check-on-step-files-signed-url","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-53536-activepieces-cross-tenant-file-download-via-missing-jwt-audience-check-on-step-files-signed-url\/","title":{"rendered":"CVE-2026-53536 &#8211; Activepieces: Cross-tenant file download via missing JWT audience check on step-files signed URL"},"content":{"rendered":"<p>CVE ID :CVE-2026-53536<\/p>\n<p>  Published : July 16, 2026, 7:16 p.m. | 18\u00a0minutes ago<\/p>\n<p>  Description :Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the \/v1\/step-files\/signed download endpoint verified the supplied JWT against the shared signing secret but did not check the token&#8217;s audience, and combined with a missing null-check on the decoded fileId, this allowed any caller holding any valid Activepieces JWT (including a freshly created user&#8217;s own access token) to receive a step-file belonging to another tenant. The file returned was whatever PostgreSQL happened to scan first for type = FLOW_STEP_FILE, varying over time as the database changed, so an authenticated user could obtain step-file attachments belonging to other tenants on the same instance; the attacker could not target a specific victim or file, and the access was read-only with no integrity or availability impact. This issue is fixed in version 0.83.0.<\/p>\n<p>  Severity: 5.3 | 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-2026-53536 Published : July 16, 2026, 7:16 p.m. | 18\u00a0minutes ago Description :Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the \/v1\/step-files\/signed download endpoint verified the supplied JWT against the shared signing secret but did not check the token&#8217;s audience, and combined with a missing null-check on the decoded &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-82103","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82103","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=82103"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82103\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}