Quick answers
- Is CVE-2026-108491 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108491 being exploited in the wild.
- How severe is CVE-2026-108491?
- High severity, with a CVSS score of 7.1, published 15 October 2026.
- Which products and versions are affected?
- Everest Forms through 3.6.1.
- Is there a fix for CVE-2026-108491?
- Yes: fixed in 3.6.2. Until then: Apply Patchstack's mitigation rule to block attacks until the plugin can be updated to version 3.6.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-108491 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-108491?
- Check whether you run Everest Forms 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: 3.6.2
Apply Patchstack's mitigation rule to block attacks until the plugin can be updated to version 3.6.2 or later.
Technical details
A stored XSS vulnerability in Everest Forms through version 3.6.1 fails to properly neutralize user input during web page generation, allowing an unauthenticated attacker to inject persistent malicious scripts. Successful exploitation requires user interaction (such as clicking a link or visiting a crafted page), but once stored, the payload executes in the context of any user viewing affected form content, granting the attacker session hijacking and data theft capabilities.
Affected products
- Everest Forms Everest Forms through 3.6.1
Timeline
- 2026-10-13: disclosed
- 2026-10-15: advisory