{"id":"CVE-2026-8883","state":"PUBLISHED","title":"Global Body Mass Index Calculator <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","description":"The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gbmicalc' shortcode in versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the GBMI_Calc_Widget::widget() function. Shortcode attributes are extracted directly into local variables via @extract($args) and then echoed unescaped into an HTML style attribute (height/width) and HTML body context (title), allowing attribute-breakout payloads. 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.","publishedAt":"2026-06-09T03:41:17.213Z","updatedAt":"2026-06-09T14:12:35.934Z","severity":{"score":6.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["helpstring Global Body Mass Index Calculator"],"affected":[{"vendor":"helpstring","product":"Global Body Mass Index Calculator","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.2","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/06804bed-17c5-413c-a31b-f6f039015e26?source=cve","https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L335","https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L134","https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L345","https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L476"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8883.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8883","state":"PUBLISHED","datePublished":"2026-06-09T03:41:17.213Z","dateUpdated":"2026-06-09T14:12:35.934Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-05-18T20:33:50.259Z"},"containers":{"cna":{"title":"Global Body Mass Index Calculator <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","descriptions":[{"lang":"en","value":"The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gbmicalc' shortcode in versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the GBMI_Calc_Widget::widget() function. Shortcode attributes are extracted directly into local variables via @extract($args) and then echoed unescaped into an HTML style attribute (height/width) and HTML body context (title), allowing attribute-breakout payloads. 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":[{"vendor":"helpstring","product":"Global Body Mass Index Calculator","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.2","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/06804bed-17c5-413c-a31b-f6f039015e26?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L335"},{"url":"https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L134"},{"url":"https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L345"},{"url":"https://plugins.trac.wordpress.org/browser/global-body-mass-index-calculator/tags/1.2/gbmicalc.php#L476"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-06-09T03:41:17.213Z"},"credits":[{"lang":"en","type":"finder","value":"Muhammad Yudha - DJ"}],"timeline":[{"time":"2026-06-08T15:07:06.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-09T14:12:23.710404Z","id":"CVE-2026-8883","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-09T14:12:35.934Z"}}]}}}