CVE-2026-39912
Critical · 9.1CVSS
9.1
EPSS
0.7%
Published
Apr 9, 2026
CISA due date
—
The record
V2Board 1.6.1 through 1.7.4 and Xboard through 0.1.9 expose authentication tokens in HTTP response bodies of the loginWithMailLink endpoint when the login_with_mail_link_enable feature is active. Unauthenticated attackers can POST to the loginWithMailLink endpoint with a known email address to receive the full authentication URL in the response, then exchange the token at the token2Login endpoint to obtain a valid bearer token with complete account access including admin privileges.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-105777 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6.5 before… CWE-201
- CVE-2026-107315 pgjdbc, the PostgreSQL JDBC Driver, versions 42.7.4 through 42.7.13 pads a value that is… CWE-201
- CVE-2026-62088 Insertion of Sensitive Information Into Sent Data vulnerability in 10up ElasticPress… CWE-201
- CVE-2026-81804 Unauthenticated Sensitive Data Exposure in ZHBackup – Backup, Restore Migration <= 2.4.2… CWE-201
- CVE-2026-78303 Joomla Extension - joomshaper.com - Unvalidated Email Destination & Form Manipulation in… CWE-201
- CVE-2026-78374 Joomla Extension - joomlart.com - Open mail relay via contact AJAX endpoint in T4 Page… CWE-201
- CVE-2026-86505 In JetBrains IntelliJ IDEA before 2026.2.2 missing project-trust check leaked project… CWE-201
- CVE-2026-86497 In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without… CWE-201