EUVD-2026-61050Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Same-site attacker context implies low privilege (PR:L); active admin click required (UI:R); impact is strictly limited to user preference integrity with no confidentiality or availability effect.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
3DescriptionCVE.org
MyBB is free and open source forum software. Prior to 1.8.40, the ACP Users View Manager module does not validate requests correctly, allowing same-site attackers to change a victim administrator's default user list view by embedding a specially crafted URL. The Set as Default control named set_default in Admin CP, Users & Groups, Users, View Manager changes the administrator's default view on GET requests without request forgery protection. The uniquely identifying implementation details include Users & Groups → Users → View Manager, and admin/inc/functions_view_manager.php. This issue is fixed in version 1.8.40.
AnalysisAI
Cross-site request forgery in MyBB's Admin Control Panel View Manager allows same-site attackers to silently change an administrator's default user list view by tricking the admin into visiting a specially crafted URL. All MyBB installations prior to version 1.8.40 are affected; the root cause is the set_default action in admin/inc/functions_view_manager.php accepting state-changing GET requests without CSRF token validation. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker has same-site presence, meaning they can serve content - such as a forum post, private message, or profile signature - that the target administrator will load while authenticated in the MyBB Admin CP; (2) the victim administrator must actively click or otherwise trigger the crafted URL or embedded resource; (3) the administrator's ACP session cookie must be active at the time of the request. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The overall risk is low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade MyBB to version 1.8.40, which adds CSRF token verification to the set_default action in admin/inc/functions_view_manager.php; the patched release is available at https://mybb.com/versions/1.8.40 and https://github.com/mybb/mybb/releases/tag/mybb_1840. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible by
ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Rated critical severity (C
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP c
Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows
The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
View allShare
External POC / Exploit Code
Leaving vuln.today