Is CVE-2026-5451 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-5451 being exploited in the wild.

How severe is CVE-2026-5451?

Medium severity, with a CVSS score of 6.4, published 8 April 2026.

Which products and versions are affected?

Hupe13 Extensions for Leaflet Map 0 - 4.14.

Is there a fix for CVE-2026-5451?

A patch was published on 2026-04-08: Fixed in version 4.15 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-5451 attacked?

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

Am I affected by CVE-2026-5451?

Check whether you run Hupe13 Extensions for Leaflet Map 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-2026-5451: hupe13 Extensions for Leaflet Map Stored XSS in elevation-track shortcode

CVE-2026-5451 · Severity: medium · CVSS 6.4 · Published 2026-04-08

The Extensions for Leaflet Map plugin for WordPress, which adds advanced mapping features like elevation charts to websites, is vulnerable to a security flaw. Authenticated users with at least 'Contributor' permissions can inject malicious scripts into pages via a specific map feature. These scripts will then execute in the browser of any visitor who views the affected page, potentially leading to unauthorized actions or data theft.

Technologies: Hupe13 Extensions for Leaflet Map. Vendors: Hupe13.

Quick answers

Is CVE-2026-5451 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-5451 being exploited in the wild.
How severe is CVE-2026-5451?: Medium severity, with a CVSS score of 6.4, published 8 April 2026.
Which products and versions are affected?: Hupe13 Extensions for Leaflet Map 0 - 4.14.
Is there a fix for CVE-2026-5451?: A patch was published on 2026-04-08: Fixed in version 4.15 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-5451 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-5451?: Check whether you run Hupe13 Extensions for Leaflet Map 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 Extensions for Leaflet Map plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on user-supplied attributes within the 'elevation-track' shortcode. An authenticated attacker with Contributor-level access or higher can exploit this by injecting arbitrary web scripts into a post or page. These scripts are stored on the server and execute in the context of a user's browser session whenever they visit the compromised page. The vulnerability is present in all versions up to and including 4.14 and was addressed in version 4.15.

Affected products

hupe13 Extensions for Leaflet Map 0 - 4.14

Timeline

2026-04-08: disclosed
2026-04-08: advisory
2026-04-08: patched: Fixed in version 4.15

References

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