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Emerging threatsHigh

CVE-2005-0511Vbulletin Vulnerability

misc.php for vBulletin 3.0.6 and earlier, when "Add Template Name in HTML Comments" is enabled, allows remote attackers to execute arbitrary PHP code via nested variables in the template parameter.

Published Feb 21, 2005 · Updated Apr 15, 2026

Key Facts

Patch immediately
  • CVE-2005-0511 is a high-severity vulnerability (CVSS 7.5 v2) affecting Vbulletin (Jelsoft).
  • It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
  • EPSS estimates a 36% probability of exploitation in the next 30 days.
  • No fixed version is listed yet; check the vendor advisory for mitigations.
  • Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v2

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS (30-day exploit likelihood)

36%

Higher than 98.4% of all scored CVEs

Exploit maturity

Weaponized

ATLAS score

52/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Weaponized

Public exploit code

3

Proof-of-concept links

In-the-wild evidence

0

Reports of active use

Advisories And Exploit References

Description

misc.php for vBulletin 3.0.6 and earlier, when "Add Template Name in HTML Comments" is enabled, allows remote attackers to execute arbitrary PHP code via nested variables in the template parameter.

Affected Products

29 affected entries in total
ProductAffected versionsFixed in
VbulletinJelsoft2.0, 2.0.1, 2.0.2, 2.0_beta_2, 2.0_beta_3, 2.2.0, 2.2.1, 2.2.2n/a

Timeline

  1. Publicly disclosed

    Feb 21, 2005

  2. Last updated

    Apr 15, 2026

FAQ

Common Questions.

Is CVE-2005-0511 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.

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Figures as of Oct 20, 2026. Compiled by Brandefense technologies from public vulnerability catalogs; scoring as described in How it works.

To report an error, contact Brandefense.