Quick answers
- Is CVE-2026-104392 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104392 being exploited in the wild.
- How severe is CVE-2026-104392?
- High severity, with a CVSS score of 8.8, published 9 October 2026.
- Which products and versions are affected?
- ExpressTech Quiz and Survey Master 11.2.7 and earlier.
- Is there a fix for CVE-2026-104392?
- Yes: fixed in 11.2.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-104392 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-104392?
- 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.
How to fix
- Fixed in: 11.2.8
Technical details
The plugin contains a PHP object injection vulnerability stemming from unsafe deserialization of untrusted input. An attacker with contributor-level privileges can craft malicious serialized objects to trigger remote code execution on the server. The vulnerability affects versions 11.2.7 and earlier; version 11.2.8 and later contain the fix.
Affected products
- ExpressTech Quiz And Survey Master 11.2.7 and earlier
Timeline
- 2026-10-09: disclosed
- 2026-10-07: advisory: Patchstack vulnerability disclosure