What’s Vulnerable › Vulnerabilities

CVE-2026-4429: OSM <= 6.1.15 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'marker_name' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-09 · updated 2026-07-24
• Weakness: CWE-79

Description

The OSM – OpenStreetMap plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'marker_name' and 'file_color_list' shortcode attribute of the [osm_map_v3] shortcode in all versions up to and including 6.1.15. This is due to insufficient input sanitization and output escaping. 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.

Affected products

• photoweblog OSM – OpenStreetMap: through 6.1.15

References

• https://plugins.trac.wordpress.org/browser/osm/tags/6.1.15/osm-icon-class.php#L347
• https://plugins.trac.wordpress.org/browser/osm/tags/6.1.15/osm-icon-class.php#L356
• https://plugins.trac.wordpress.org/browser/osm/tags/6.1.15/osm_map_v3/osm-sc-osm_map_v3.php#L31
• https://plugins.trac.wordpress.org/browser/osm/tags/6.1.15/osm_map_v3/osm-sc-osm_map_v3.php#L560
• https://plugins.trac.wordpress.org/browser/osm/trunk/osm-icon-class.php#L347
• https://plugins.trac.wordpress.org/browser/osm/trunk/osm-icon-class.php#L356
• https://plugins.trac.wordpress.org/browser/osm/trunk/osm_map_v3/osm-sc-osm_map_v3.php#L31
• https://plugins.trac.wordpress.org/browser/osm/trunk/osm_map_v3/osm-sc-osm_map_v3.php#L560
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3493950%40osm&new=3493950%40osm&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/65dffde9-2a50-41fe-bc21-3d0915068887?source=cve

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