GROWI contains an authorization bypass vulnerability in its tag update API and the page update API due to improper use of a user-controlled key. By exploiting this vulnerability, an attacker who can log in to the product may obtain the contents of pages without the required read permission and save them to pages that the attacker can edit.

GROWI contains an authorization bypass vulnerability in its tag update API and the page update API due to improper use of a user-controlled key. By exploiting this vulnerability, an attacker who can log in to the product may obtain the contents of pages without the required read permission and save them to pages that the attacker can edit.

GROWI provided by GROWI, Inc. contains multiple vulnerabilities listed below:<a href='https://cwe.mitre.org/data/definitions/639.html' target='_blank'></a><a href='https://cwe.mitre.org/data/definitions/639.html' target='_blank'></a><a href='https://cwe.mitre.org/data/definitions/862.html' target='_blank'></a><ul><li>Authorization bypass through user-controlled key in the page view and comment feature (CWE-639) - CVE-2026-105272</li><li>Authorization bypass through user-controlled key in the tag update API and the page update API (CWE-639) - CVE-2026-109848</li><li>Missing authorization in the collaborative editing feature (CWE-862) - CVE-2026-115624</li></ul>GROWI, Inc. reported these vulnerabilities to JPCERT/CC to notify users of the solutions through JVN. JPCERT/CC and GROWI, Inc. coordinated under the Information Security Early Warning Partnership.