PT-2026-30694 · Xenocrat · Chyrp Lite

Whoamins · Published 2026-04-06 · Updated 2026-04-06 · CVE-2026-35173

Mitre

CVSS v3.1

6.5

Medium

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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.

Fix

IDOR

Weakness Enumeration

CWE-639

CWE-914

Related Identifiers

CVE-2026-35173

Affected Products

Chyrp Lite

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-35173 · Security Note
• https://github.com/xenocrat/chyrp-lite/security/advisories/GHSA-8c3h-rh2j-fxr9 · Note