Quick answers
- Is CVE-2023-33999 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2023-33999 being exploited in the wild.
- How severe is CVE-2023-33999?
- High severity, with a CVSS score of 7.1, published 11 June 2026.
- Which products and versions are affected?
- WPVibes WP Mail Log <= 1.0.2.
- Is there a fix for CVE-2023-33999?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. 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-2023-33999 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2023-33999?
- Check whether you run WPVibes WP Mail Log 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
The WP Mail Log plugin for WordPress (versions 1.0.2 and below) is vulnerable to DOM-based Cross-Site Scripting (XSS) via the Freemius library (versions prior to 2.5.10). The vulnerability stems from improper neutralization of user-supplied input during web page generation, allowing an unauthenticated attacker to inject malicious scripts. Exploitation requires a victim (typically an administrator) to perform an action such as clicking a crafted link (User Interaction required). Successful exploitation can lead to arbitrary JavaScript execution in the context of the victim's browser session. The issue is resolved in version 1.1.1 of the plugin, which includes an updated version of the Freemius library.
Affected products
- WPVibes WP Mail Log <= 1.0.2
Timeline
- 2023-07-19: disclosed: Initial disclosure by Patchstack
- 2023-07-19: advisory: Patchstack advisory published
- 2026-06-11: advisory: NVD publication date