Is CVE-2026-121573 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-121573 being exploited in the wild.

How severe is CVE-2026-121573?

Medium severity, with a CVSS score of 6.5, published 9 November 2026.

Which products and versions are affected?

Melapress WP Activity Log up to 5.6.7.

Is there a fix for CVE-2026-121573?

Yes: fixed in 5.6.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-121573 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-121573?

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.

CVE-2026-121573: Melapress WP Activity Log stored cross-site scripting

CVE-2026-121573 · Severity: medium · CVSS 6.5 · Published 2026-11-09

WP Activity Log is a WordPress plugin that logs user activity and security events on WordPress sites. A stored XSS vulnerability allows attackers with subscriber-level access to inject malicious scripts that execute in the browsers of site visitors and administrators, potentially stealing session cookies, admin credentials, or hijacking user accounts.

Technologies: Melapress WP Activity Log. Vendors: Melapress.

Quick answers

Is CVE-2026-121573 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-121573 being exploited in the wild.
How severe is CVE-2026-121573?: Medium severity, with a CVSS score of 6.5, published 9 November 2026.
Which products and versions are affected?: Melapress WP Activity Log up to 5.6.7.
Is there a fix for CVE-2026-121573?: Yes: fixed in 5.6.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-121573 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-121573?: 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.

How to fix

Fixed in: 5.6.8

Technical details

A stored cross-site scripting (XSS) vulnerability in WP Activity Log versions up to 5.6.7 fails to properly sanitize user input during web page generation. An attacker with subscriber privileges can inject malicious JavaScript that persists in the application and executes when administrators or other users view affected pages, leading to account takeover or data theft. The vulnerability requires user interaction (a privileged user must view the malicious content) and has been fixed in version 5.6.8.

Affected products

Melapress WP Activity Log up to 5.6.7

Timeline

2026-11-02: disclosed
2026-11-07: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.