{"id":"CVE-2026-62376","published":"2026-10-09T21:17:05.627","lastModified":"2026-10-13T19:18:53.293","description":"Vikunja is an open-source self-hosted task management platform. Versions prior to 2.4.0 store password-reset, email-confirmation, and account-deletion tokens in the `user_tokens` table in plaintext. If an attacker gains read access to the database through a backup leak, misconfigured storage, or SQL-level exposure, they can immediately use pending tokens to take over user accounts without knowing passwords. Version 2.4.0 fixes the issue.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-312","CWE-916"],"vendors":[],"products":[],"references":[{"url":"https://github.com/go-vikunja/vikunja/commit/00fd2c6155c01faae99be4226b931d8091fd6323","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/commit/3a0ea15d8c18ff960bc98ae39950fa7a14b0af7d","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/commit/e31ea2de5040fa63bc97cf4df63bafed3bd9ad85","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r6w9-259g-gwrv","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r6w9-259g-gwrv","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-vikunja/vikunja/commit/00fd2c6155c01faae99be4226b931d8091fd6323","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/commit/3a0ea15d8c18ff960bc98ae39950fa7a14b0af7d","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/commit/e31ea2de5040fa63bc97cf4df63bafed3bd9ad85","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r6w9-259g-gwrv","tags":[]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r6w9-259g-gwrv","tags":[]}],"hasPoc":true,"ai":{"summary":"Vikunja stores sensitive authentication tokens in plaintext within its database, allowing attackers with database read access to immediately hijack user accounts without needing valid passwords. This creates a critical risk where stolen backups or misconfigured databases can lead to immediate account takeovers.","exploitability":"Exploitation is relatively easy for attackers who gain read access to the database, requiring no additional credentials or complex attack chains beyond accessing the user_tokens table.","blast_radius":"The impact could be widespread across all affected users whose tokens are stored in the vulnerable database, potentially leading to complete account compromise and unauthorized access to task management data.","remediation":"Upgrade to version 2.4.0 or later to fix the plaintext token storage vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","database","credential-exfiltration","account-takeover"],"model":"garnet-coder","analyzedAt":"2026-10-17T08:58:02.479Z"}}