{"id":81786,"date":"2026-07-10T12:46:54","date_gmt":"2026-07-10T09:16:54","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-9838-ics-calendar\/"},"modified":"2026-07-10T12:46:54","modified_gmt":"2026-07-10T09:16:54","slug":"cve-2026-9838-ics-calendar","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-9838-ics-calendar\/","title":{"rendered":"CVE-2026-9838 &#8211; ICS Calendar"},"content":{"rendered":"<p>CVE ID :CVE-2026-9838<\/p>\n<p>  Published : July 10, 2026, 9:16 a.m. | 32\u00a0minutes ago<\/p>\n<p>  Description :The ICS Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the &#8216;htmltagtitle&#8217; parameter in all versions up to, and including, 12.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The vulnerability is reachable via the unauthenticated wp_ajax_nopriv_r34ics_ajax AJAX action, which accepts attacker-controlled js_args values merged over stored shortcode configuration without nonce verification, allowing the htmltagtitle key to bypass the normal shortcode allowlist check.<\/p>\n<p>  Severity: 6.1 | 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-2026-9838 Published : July 10, 2026, 9:16 a.m. | 32\u00a0minutes ago Description :The ICS Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the &#8216;htmltagtitle&#8217; parameter in all versions up to, and including, 12.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject &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-81786","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81786","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=81786"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81786\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}