CVE-2026-5717 | knighthawk VI Include Post By Plugin up to 0.4.200706 on WordPress Shortcode include-post-by-cat cross site scripting (EUVD-2026-22847)

VDB-357688 · CVE-2026-5717 · EUVD-2026-22847 KNIGHTHAWK VI INCLUDE POST BY PLUGIN UP TO 0.4.200706 ON WORDPRESS SHORTCODE INCLUDE-POST-BY-CAT CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.9 $0-$5k 4.17+ Summaryinfo A vulnerability, which was classified as problematic, was found in knighthawk VI Include Post By Plugin up to 0.4.200706 on WordPress. Affected by this issue is the function include-post-by-cat of the component Shortcode Handler. Executing a manipulation can lead to cross site scripting. This vulnerability appears as CVE-2026-5717. The attack may be performed from remote. There is no available exploit. Detailsinfo A vulnerability classified as problematic was found in knighthawk VI Include Post By Plugin up to 0.4.200706 on WordPress. This vulnerability affects the function include-post-by-cat of the component Shortcode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes: The VI: Include Post By plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_container' attribute of the 'include-post-by-cat' shortcode in all versions up to, and including, 0.4.200706 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The weakness was presented by Nail Majdeddine. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-5717 since 04/06/2026. The exploitation appears to be easy. The attack can be initiated 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. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-22847). Productinfo Type WordPress Plugin Vendor knighthawk Name VI Include Post By Plugin Version 0.4.200706 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: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/06/2026 CVE reserved 04/15/2026 +9 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Nail Majdeddine Status: Not defined CVE: CVE-2026-5717 (🔒) GCVE (CVE): GCVE-0-2026-5717 GCVE (VulDB): GCVE-100-357688 EUVD: 🔒 Entryinfo Created: 04/15/2026 11:46 Updated: 04/15/2026 12:00 Changes: 04/15/2026 11:46 (66), 04/15/2026 12:00 (1) Complete: 🔍 Cache ID: 99:E6E:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸