CVE-2026-1559 | Youzify Plugin up to 1.3.6 on WordPress checkin_place_id cross site scripting

VDB-358176 · CVE-2026-1559 · GCVE-0-2026-1559 YOUZIFY PLUGIN UP TO 1.3.6 ON WORDPRESS CHECKIN_PLACE_ID CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.9 $0-$5k 0.38+ Summaryinfo A vulnerability classified as problematic was found in Youzify Plugin up to 1.3.6 on WordPress. Impacted is an unknown function. The manipulation of the argument checkin_place_id results in cross site scripting. This vulnerability is identified as CVE-2026-1559. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised. Detailsinfo A vulnerability, which was classified as problematic, was found in Youzify Plugin up to 1.3.6 on WordPress. Affected is an unknown function. The manipulation of the argument checkin_place_id with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes: The Youzify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'checkin_place_id' parameter in all versions up to, and including, 1.3.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The weakness was released by Tharadol Suksamran. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-1559 since 01/28/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007. Upgrading to version 1.3.6 eliminates this vulnerability. Productinfo Type WordPress Plugin Name Youzify Plugin Version 1.3.0 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.3.6 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.9 VulDB Meta Temp Score: 4.9 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.4 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Youzify Plugin 1.3.6 Timelineinfo 01/28/2026 CVE reserved 04/18/2026 +79 days Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Tharadol Suksamran Status: Confirmed CVE: CVE-2026-1559 (🔒) GCVE (CVE): GCVE-0-2026-1559 GCVE (VulDB): GCVE-100-358176 Entryinfo Created: 04/18/2026 09:18 Changes: 04/18/2026 09:18 (66) Complete: 🔍 Cache ID: 99:A85:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸