Vulnerability Details CVE-2023-25135
vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.929
EPSS Ranking 99.8%
CVSS Severity
CVSS v3 Score 9.8
References
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch
- https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch
- https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable