{"id":81136,"date":"2026-06-27T00:27:13","date_gmt":"2026-06-26T20:57:13","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-45807-kestra-path-traversal-via-url-encoded-%2e%2e-in-execution-and-namespace-file-endpoints-allows-arbitrary-file-read\/"},"modified":"2026-06-27T00:27:13","modified_gmt":"2026-06-26T20:57:13","slug":"cve-2026-45807-kestra-path-traversal-via-url-encoded-%2e%2e-in-execution-and-namespace-file-endpoints-allows-arbitrary-file-read","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-45807-kestra-path-traversal-via-url-encoded-%2e%2e-in-execution-and-namespace-file-endpoints-allows-arbitrary-file-read\/","title":{"rendered":"CVE-2026-45807 &#8211; Kestra: Path traversal via URL-encoded &#8220;%2E%2E&#8221; in execution and namespace file endpoints allows arbitrary file read"},"content":{"rendered":"<p>CVE ID :CVE-2026-45807<\/p>\n<p>  Published : June 26, 2026, 8:57 p.m. | 47\u00a0minutes ago<\/p>\n<p>  Description :Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:\/\/ URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard only inspects the literal URI.toString(), so a URL-encoded .. written as %2E%2E slips through. The downstream code then calls URI.getPath(), which decodes %2E%2E back to .., and the resulting path is handed to Paths.get(&#8230;) without normalization. The OS resolves the .. segments at open(2) time, so an authenticated user with a single execution can read any file the Kestra process has access to on the host filesystem (\/etc\/passwd, mounted secrets, other tenants&#8217; execution outputs, etc.). This vulnerability is fixed in 1.0.43 and 1.3.19.<\/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-2026-45807 Published : June 26, 2026, 8:57 p.m. | 47\u00a0minutes ago Description :Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:\/\/ URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard only &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-81136","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81136","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=81136"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81136\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}