Quick answers
- Is CVE-2026-27427 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-27427 being exploited in the wild.
- How severe is CVE-2026-27427?
- Medium severity, with a CVSS score of 6.5, published 26 May 2026.
- Which products and versions are affected?
- Dylan Kuhn Geo Mashup up to 1.13.18.
- Is there a fix for CVE-2026-27427?
- A patch was published on 2026-05-26: Version 1.13.19 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-27427 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-27427?
- Check whether you run Dylan Kuhn Geo Mashup 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 Geo Mashup plugin for WordPress (versions <= 1.13.18) contains a Stored Cross-Site Scripting (XSS) vulnerability. The flaw stems from improper neutralization of user-supplied input during web page generation (CWE-79). An attacker with 'Contributor' level privileges or higher can inject malicious HTML or JavaScript payloads that are stored on the server. When a victim (such as an administrator) views the affected page, the script executes in their browser context. This can lead to session hijacking or unauthorized administrative actions. The issue is resolved in version 1.13.19.
Affected products
- Dylan Kuhn Geo Mashup up to 1.13.18
Timeline
- 2025-10-20: other: Reported by Muhammad Yudha - DJ
- 2026-05-26: advisory: Published by Patchstack
- 2026-05-26: patched: Version 1.13.19 released