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CVE-2026-35173

Chyrp Lite has an IDOR via Mass Assignment in Post Model

Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, an IDOR / Mass Assignment issue exists in the Post model that allows authenticated users with post editing permissions (Edit Post, Edit Draft, Edit Own Post, Edit Own Draft) to modify posts they do not own and do not have permission to edit. By passing internal class properties such as id into the post_attributes payload, an attacker can alter the object being instantiated. As a result, further actions are performed on another user’s post rather than the attacker’s own post, effectively enabling post takeover. This vulnerability is fixed in 2026.01.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Chyrplite Xenocrat Project
Products
Chyrp Lite Chyrp-lite
CVE-2026-35174

Chyrp Lite has a Path Traversal to Remote Code Execution

Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, a path traversal vulnerability exists in the administration console that allows an administrator or a user with Change Settings permission to change the uploads path to any folder. This vulnerability allows the user to download any file on the server, including config.json.php with database credentials and overwrite critical system files, leading to remote code execution. This vulnerability is fixed in 2026.01.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Chyrplite Xenocrat Project
Products
Chyrp Lite Chyrp-lite
CVE-2024-58285

Chyrp 2.5.2 Stored Cross-Site Scripting Vulnerability via Post Title

Chyrp 2.5.2 contains a stored cross-site scripting vulnerability that allows authenticated users to inject malicious scripts into post titles. Attackers can craft payloads in the title field that will execute when the post is viewed by other users, potentially stealing session cookies or performing client-side attacks.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Chyrp Chyrplite
Products
Chyrp Chyrp Lite