{"id":"CVE-2026-8698","aliases":["EUVD-2026-32055","GHSA-3r7w-pvvh-cggq"],"status":"published","title":"Cryptocurrency Prijsvergelijking Widget \u003c= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width' Shortcode Attribute","description":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an \u003ciframe\u003e element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;\"onload=\"alert(1)\" x=\"' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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":"2026-11-11","score":0.00187,"percentile":0.0839,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-05-27T05:31:18Z","modified":"2026-06-17T11:04:18Z","products":[{"vendor":"cryptoprijzen","product":"cryptocurrency prijsvergelijking widget"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/058e47cd-55c8-48b3-8aa6-ef299886061d?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/cryptocurrency-prijsvergelijking-widget/trunk/functions.php#L157"},{"url":"https://plugins.trac.wordpress.org/browser/cryptocurrency-prijsvergelijking-widget/trunk/functions.php#L138"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8698"},{"url":"https://github.com/advisories/GHSA-3r7w-pvvh-cggq"}],"sources":{"cve":[{"id":"CVE-2026-8698","title":"Cryptocurrency Prijsvergelijking Widget \u003c= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width' Shortcode Attribute","description":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an \u003ciframe\u003e element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;\"onload=\"alert(1)\" x=\"' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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":"2026-05-27T05:31:18.902Z","modified":"2026-05-27T10:40:15.946Z","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":"2026-11-02T13:48:02.226896Z"}],"euvd":[{"id":"EUVD-2026-32055","description":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an \u003ciframe\u003e element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;\"onload=\"alert(1)\" x=\"' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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":"2026-05-27T05:31:18Z","modified":"2026-05-27T10:40:15Z","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":"2026-11-02T18:21:05.687306Z"}],"ghsa":[{"id":"GHSA-3r7w-pvvh-cggq","title":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross...","description":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an \u003ciframe\u003e element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;\"onload=\"alert(1)\" x=\"' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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":"2026-05-27T09:31:12Z","modified":"2026-05-27T09:31:13Z","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":"2026-11-02T15:08:19.474205Z"}],"nvd":[{"id":"CVE-2026-8698","description":"The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an \u003ciframe\u003e element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;\"onload=\"alert(1)\" x=\"' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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":"2026-05-27T07:16:14.177Z","modified":"2026-06-17T11:04:18.123Z","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":"2026-11-02T14:12:20.511562Z"}]}}