CVE-2026-5341

Description

The NMR Strava activities plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `strava_nmr_connect` shortcode in all versions up to, and including, 1.0.14 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

• https://plugins.trac.wordpress.org/browser/nmr-strava-activities/tags/1.0.14/nmr-strava-activities.php#L247
• https://plugins.trac.wordpress.org/browser/nmr-strava-activities/tags/1.0.14/nmr-strava-activities.php#L259
• https://plugins.trac.wordpress.org/browser/nmr-strava-activities/tags/1.0.15/nmr-strava-activities.php#L240
• https://plugins.trac.wordpress.org/browser/nmr-strava-activities/tags/1.0.15/nmr-strava-activities.php#L251
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3524779%40nmr-strava-activities%2Ftrunk&old=3520018%40nmr-strava-activities%2Ftrunk&sfp_email=&sfph_mail=