Quick answers
- Is CVE-2026-40787 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-40787 being exploited in the wild.
- How severe is CVE-2026-40787?
- High severity, with a CVSS score of 7.1, published 15 June 2026.
- Which products and versions are affected?
- ExpressTech Quiz and Survey Master <= 11.0.0.
- Is there a fix for CVE-2026-40787?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-40787 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-40787?
- Check whether you run ExpressTech Quiz and Survey Master at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The Quiz And Survey Master plugin for WordPress is vulnerable to unauthenticated Cross-Site Scripting (XSS) due to improper neutralization of input during web page generation (CWE-79). This vulnerability exists in versions up to and including 11.0.0. An attacker can exploit this by sending a specially crafted request to the site, which requires a victim (such as an administrator or guest) to interact with a malicious link or page. Successful exploitation allows the execution of arbitrary JavaScript in the victim's browser session, which can be used to hijack sessions or modify page content. The issue is resolved in version 11.1.0.
Affected products
- ExpressTech Quiz And Survey Master <= 11.0.0
Timeline
- 2026-03-18: other: Reported by Jakub Herman
- 2026-04-23: advisory: Initial advisory published by Patchstack
- 2026-06-15: disclosed: CVE published to NVD