{"affected":[{"affectedData":[{"product":"glpi","vendor":"glpi-project","versions":[{"status":"affected","version":"< 9.5.4"}]}],"source":"security-advisories@github.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:glpi-project:glpi:*:*:*:*:*:*:*:*","matchCriteriaId":"9506B7CC-727B-40FE-B5A3-69B362E1ACEB","versionEndExcluding":"9.5.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"GLPI is open source software which stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package. In GLPI before verison 9.5.4, there is a vulnerability in the /ajax/common.tabs.php endpoint, indeed, at least two parameters _target and id are not properly sanitized. Here are two payloads (due to two different exploitations depending on which parameter you act) to exploit the vulnerability:/ajax/common.tabs.php?_target=javascript:alert(document.cookie)&_itemtype=DisplayPreference&_glpi_tab=DisplayPreference$2&id=258&displaytype=Ticket (Payload triggered if you click on the button). /ajax/common.tabs.php?_target=/front/ticket.form.php&_itemtype=Ticket&_glpi_tab=Ticket$1&id=(){};(function%20(){alert(document.cookie);})();function%20a&#."},{"lang":"es","value":"GLPI es un software de código abierto que significa Gestionnaire Libre de Parc Informatique y es un paquete gratuito de Software de Gestión de Activos y TI.&#xa0;En GLPI anterior a la versión 9.5.4, existe una vulnerabilidad en el endpoint /ajax/common.tabs.php, de hecho, al menos dos parámetros _target e id no están correctamente saneados.&#xa0;Aquí existen dos cargas útiles (debido a dos explotaciones diferentes según el parámetro que actúe) para explotar la vulnerabilidad: /ajax/common.tabs.php?_target=javascript:alert(document.cookie)&amp; _itemtype=DisplayPreference&amp;_glpi_tab=DisplayPreference$2&amp;id=258&amp;displaytype=Ticket (Carga útil que se activa si hace clic en el botón).&#xa0;/ajax/common.tabs.php?_target=/front/ticket.form.php&amp;_itemtype=Ticket&amp;_glpi_tab=Ticket$1&amp;id=(){}; (function%20(){alert(document.cookie);})(); function%20a&amp;#"}],"id":"CVE-2021-21313","lastModified":"2026-06-17T03:35:16.477","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"NONE","baseScore":4.3,"confidentialityImpact":"NONE","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","version":"2.0"},"exploitabilityScore":8.6,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":true}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":1.2,"impactScore":3.6,"source":"security-advisories@github.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"exploitabilityScore":2.8,"impactScore":2.7,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-03-03T20:15:12.200","references":[{"source":"security-advisories@github.com","tags":["Release Notes","Third Party Advisory"],"url":"https://github.com/glpi-project/glpi/releases/tag/9.5.4"},{"source":"security-advisories@github.com","tags":["Third Party Advisory"],"url":"https://github.com/glpi-project/glpi/security/advisories/GHSA-h4hj-mrpg-xfgx"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Third Party Advisory"],"url":"https://github.com/glpi-project/glpi/releases/tag/9.5.4"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://github.com/glpi-project/glpi/security/advisories/GHSA-h4hj-mrpg-xfgx"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-74"}],"source":"security-advisories@github.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-79"}],"source":"nvd@nist.gov","type":"Primary"}]}