Quick answers
- Is CVE-2026-45435 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-45435 being exploited in the wild.
- How severe is CVE-2026-45435?
- Medium severity, with a CVSS score of 6.5, published 25 May 2026.
- Which products and versions are affected?
- Melapress WP Activity Log through 5.6.3.
- Is there a fix for CVE-2026-45435?
- A patch was published on 2026-05-19: Version 5.6.3.1 released to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-45435 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-45435?
- Check whether you run Melapress WP Activity 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
A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the Melapress WP Activity Log plugin for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation, specifically within the Document Object Model (DOM) environment. An attacker with 'Subscriber' level privileges or higher can inject malicious payloads that execute in the context of a more privileged user's session (such as an administrator) when they interact with a crafted page or link. This is classified as CWE-79 and has been addressed in version 5.6.3.1.
Affected products
- Melapress WP Activity Log through 5.6.3
Timeline
- 2026-04-30: other: Vulnerability reported by researcher daroo
- 2026-05-19: advisory: Initial advisory published by Patchstack
- 2026-05-25: disclosed: CVE published to NVD
- 2026-05-19: patched: Version 5.6.3.1 released to address the issue