CVE-2026-5797 | expresstech Quiz and Survey Master Plugin up to 10.1.0 on WordPress do_shortcode cross site scripting

VDB-358025 · CVE-2026-5797 · GCVE-0-2026-5797 EXPRESSTECH QUIZ AND SURVEY MASTER PLUGIN UP TO 10.1.0 ON WORDPRESS DO_SHORTCODE CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.7 $0-$5k 2.04+ Summaryinfo A vulnerability has been found in expresstech Quiz and Survey Master Plugin up to 10.1.0 on WordPress and classified as problematic. This affects the function do_shortcode. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-5797. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability was found in expresstech Quiz and Survey Master Plugin up to 10.1.0 on WordPress and classified as problematic. This issue affects the function do_shortcode. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is: The Quiz And Survey Master plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to and including 11.1.0. This is due to insufficient input sanitization and the execution of do_shortcode() on user-submitted quiz answer text. User-submitted answers pass through sanitize_text_field() and htmlspecialchars(), which only strip HTML tags but do not encode or remove shortcode brackets [ and ]. When quiz results are displayed, the plugin calls do_shortcode() on the entire results page output (including user answers), causing any injected shortcodes to be executed. This makes it possible for unauthenticated attackers to inject arbitrary WordPress shortcodes such as [qsm_result id=X] to access other users' quiz submissions without authorization, as the qsm_result shortcode lacks any authorization checks. The weakness was published by Rafshanzani Suhada. The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-5797 since 04/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. Upgrading to version 10.3.5 eliminates this vulnerability. Productinfo Type Survey Software Vendor expresstech Name Quiz and Survey Master Plugin Version 10.0 10.1.0 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.8 VulDB Meta Temp Score: 4.7 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.3 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: Quiz and Survey Master Plugin 10.3.5 Timelineinfo 04/08/2026 CVE reserved 04/17/2026 +9 days Advisory disclosed 04/17/2026 +0 days VulDB entry created 04/17/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Rafshanzani Suhada Status: Confirmed CVE: CVE-2026-5797 (🔒) GCVE (CVE): GCVE-0-2026-5797 GCVE (VulDB): GCVE-100-358025 Entryinfo Created: 04/17/2026 08:36 Changes: 04/17/2026 08:36 (67) Complete: 🔍 Cache ID: 99:4A6:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸