Quick answers
- Is CVE-2026-115299 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-115299 being exploited in the wild.
- How severe is CVE-2026-115299?
- Informational severity, published 29 October 2026.
- Which products and versions are affected?
- Supsystic Contact Form by Supsystic before 1.11.1.
- Is there a fix for CVE-2026-115299?
- Yes: fixed in 1.11.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-115299 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-115299?
- Check whether you run Supsystic Contact Form by Supsystic 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: 1.11.1
Technical details
The plugin fails to validate a CSRF nonce when saving mail settings, allowing an unauthenticated attacker to forge requests that modify SMTP configuration, credentials, and notification recipient addresses. The attack requires social engineering of a logged-in administrator but no special network positioning. A successful exploit redirects all contact form emails through attacker-controlled infrastructure, enabling credential theft and message interception.
Affected products
- Supsystic Contact Form by Supsystic before 1.11.1
Timeline
- 2026-10-26: disclosed
- 2026-10-29: advisory