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Servers and applications

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.

Severity
Critical 9.8
Published
3 Feb 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
vBulletinServers and applications · cpe:a:vbulletin:vbulletin
  • Version 5.6.7
  • Version 5.6.8
  • Version 5.6.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-25135
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-25135