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vbulletin vulnerabilities

54 published CVES affecting vbulletin, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
54
Critical
11
High
11
Medium
31
Low
1
Unscored
0
CISA KEV
2
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Latest vbulletin CVEs

Newest publication first · page 1 of 3

  1. CriticalCVSS 9.3 EPSS 74.3%

    vBulletin 5.x through 5.7.5 and 6.x through 6.2.1 contains an eval injection vulnerability in the vB5_Template_Runtime::runMaths() method within the template runtime that allows unauthenticated remote attackers to execute arbitrary PHP code by supplying crafted input through the...

  2. MediumCVSS 5.1 EPSS 0.28%

    A vulnerability was found in vBulletin 6.x. This impacts an unknown function of the component Login. Performing a manipulation results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been made public and could be used. VulDB is withholding...

  3. MediumCVSS 5.4 EPSS 0.31%

    vBulletin 3.8.7 is vulnerable to a denial-of-service condition via the misc.php?do=buddylist endpoint. If an authenticated user has a sufficiently large buddy list, processing the list can consume excessive memory, exhausting system resources and crashing the forum.

  4. HighCVSS 8.1 EPSS 57.3% Framework module

    Certain vBulletin versions might allow attackers to execute arbitrary PHP code by abusing Template Conditionals in the template engine. By crafting template code in an alternative PHP function invocation syntax, such as the "var_dump"("test") syntax, attackers can bypass security...

  5. CriticalCVSS 9.8 EPSS 75.6% Framework module

    vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.

  6. CriticalCVSS 9.8 EPSS 24.9%

    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. Th...

  7. CriticalCVSS 9.8 EPSS 45.0%

    vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759. ALSO NOTE: CVE-2020-7373 is a duplicate of CVE-2020-17496...

  8. CriticalCVSS 9.8 EPSS 87.5% CISA KEV added 2021-11-03 Exploited in the wild Framework module PoC

    vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.