{"id":"CVE-2026-3998","aliases":["EUVD-2026-22865","GHSA-qq42-h26h-x735"],"status":"published","title":"WM JqMath \u003c= 1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'style' Shortcode Attribute","description":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other 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.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00265,"percentile":0.18538,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-04-15T08:28:16Z","modified":"2026-06-17T10:44:35Z","products":[{"vendor":"webmindpt","product":"wm jqmath"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b4aebb45-b47b-4b5a-8281-400a4b786689?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/wm-jqmath/trunk/wm_jqmath.php#L33"},{"url":"https://plugins.trac.wordpress.org/browser/wm-jqmath/tags/1.3/wm_jqmath.php#L33"},{"url":"https://plugins.trac.wordpress.org/browser/wm-jqmath/trunk/wm_jqmath.php#L27"},{"url":"https://plugins.trac.wordpress.org/browser/wm-jqmath/tags/1.3/wm_jqmath.php#L27"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3998"},{"url":"https://github.com/advisories/GHSA-qq42-h26h-x735"}],"sources":{"cve":[{"id":"CVE-2026-3998","title":"WM JqMath \u003c= 1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'style' Shortcode Attribute","description":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other 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.","status":"published","published":"2026-04-15T08:28:16.854Z","modified":"2026-04-15T18:08:29.456Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:48:58.05327Z"}],"euvd":[{"id":"EUVD-2026-22865","description":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other 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.","status":"published","published":"2026-04-15T08:28:16Z","modified":"2026-04-15T18:08:29Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:25.212217Z"}],"ghsa":[{"id":"GHSA-qq42-h26h-x735","title":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style'...","description":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other 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.","status":"published","published":"2026-04-22T21:31:44Z","modified":"2026-04-22T21:31:55Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:07:35.737909Z"}],"nvd":[{"id":"CVE-2026-3998","description":"The WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other 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.","status":"published","published":"2026-04-15T09:16:32.253Z","modified":"2026-06-17T10:44:35.76Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}