Quick answers
- Is CVE-2026-123464 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-123464 being exploited in the wild.
- How severe is CVE-2026-123464?
- Medium severity, with a CVSS score of 6.5, published 7 November 2026.
- Which products and versions are affected?
- StellarWP The Events Calendar through 6.18.3.
- Is there a fix for CVE-2026-123464?
- Yes: fixed in 6.18.3.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-123464 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-123464?
- Check whether you run StellarWP The Events Calendar 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: 6.18.3.1
Technical details
A stored XSS vulnerability in The Events Calendar plugin versions up to 6.18.3 permits authenticated users with Contributor or Developer privileges to inject malicious JavaScript that persists in the database. The vulnerability requires user interaction or privileged account action to be exploited. Successful exploitation allows attackers to steal visitor data or perform actions on behalf of other users.
Affected products
- StellarWP The Events Calendar through 6.18.3
Timeline
- 2026-10-28: disclosed: Reported to Patchstack
- 2026-11-07: advisory: Published by Patchstack