Quick answers
- Is CVE-2026-66690 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66690 being exploited in the wild.
- How severe is CVE-2026-66690?
- High severity, with a CVSS score of 7.1, published 6 August 2026.
- Which products and versions are affected?
- StellarWP GiveWP <=4.16.5.
- Is there a fix for CVE-2026-66690?
- A patch was published on 2026-07-31: Version 4.16.5.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-66690 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-66690?
- Check whether you run StellarWP GiveWP 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
This is an unauthenticated Cross-Site Scripting (XSS) vulnerability in GiveWP versions 4.16.5 and earlier. The vulnerability allows attackers to inject malicious JavaScript into the plugin without requiring authentication or privileged access. Exploitation requires user interaction (e.g., a visitor clicking a malicious link or visiting a crafted page). Successful exploitation enables attackers to steal visitor data, hijack accounts, or perform actions on behalf of affected users. The vulnerability was patched in version 4.16.5.1.
Affected products
- StellarWP GiveWP <=4.16.5
Timeline
- 2026-07-22: disclosed
- 2026-07-31: patched: Version 4.16.5.1 released