{"id":77608,"date":"2026-02-21T01:57:36","date_gmt":"2026-02-20T22:27:36","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-27121-svelte-affected-by-cross-site-scripting-via-spread-attributes-in-svelte-ssr\/"},"modified":"2026-02-21T01:57:36","modified_gmt":"2026-02-20T22:27:36","slug":"cve-2026-27121-svelte-affected-by-cross-site-scripting-via-spread-attributes-in-svelte-ssr","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-27121-svelte-affected-by-cross-site-scripting-via-spread-attributes-in-svelte-ssr\/","title":{"rendered":"CVE-2026-27121 &#8211; Svelte affected by cross-site scripting via spread attributes in Svelte SSR"},"content":{"rendered":"<p>CVE ID : CVE-2026-27121<\/p>\n<p>Published :  Feb. 20, 2026, 10:27 p.m. | 35\u00a0minutes ago<\/p>\n<p>Description : svelte performance oriented web framework. Versions of svelte prior to 5.51.5 are vulnerable to cross-site scripting (XSS) during server-side rendering. When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML output. If an application spreads user-controlled or external data as element attributes, an attacker can inject malicious event handlers that execute in victims&#8217; browsers. This vulnerability is fixed in 5.51.5.<\/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-2026-27121 Published : Feb. 20, 2026, 10:27 p.m. | 35\u00a0minutes ago Description : svelte performance oriented web framework. Versions of svelte prior to 5.51.5 are vulnerable to cross-site scripting (XSS) during server-side rendering. When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML &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-77608","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77608","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=77608"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77608\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=77608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=77608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=77608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}