Quick answers
- Is CVE-2026-39766 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-39766 being exploited in the wild.
- How severe is CVE-2026-39766?
- High severity, with a CVSS score of 7.1, published 6 October 2026.
- Which products and versions are affected?
- ARForms up to 7.1.2.
- Is there a fix for CVE-2026-39766?
- No fixed version is recorded yet. Patchstack has issued a mitigation rule to block attacks against this vulnerability until an official patch is available. Contact your hosting provider or web developer for assistance if you cannot update immediately. 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-2026-39766 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-39766?
- Check whether you run ARForms 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
Patchstack has issued a mitigation rule to block attacks against this vulnerability until an official patch is available. Contact your hosting provider or web developer for assistance if you cannot update immediately.
Technical details
This is a reflected or stored cross-site scripting vulnerability in ARForms versions 7.1.2 and earlier that can be exploited without authentication. Attackers can craft malicious payloads to inject arbitrary JavaScript into the site, potentially capturing user credentials or performing actions on behalf of visitors. No fix is currently available according to Patchstack.
Affected products
- ARForms ARForms up to 7.1.2
Timeline
- 2026-10-05: disclosed
- 2026-10-06: advisory