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💎 RubyGems
Not in CISA KEV

CVE-2012-5604 — ldap_fluff

Fix: theforeman/ldap_fluff@e4c90a5

CVE-2012-5604 is a CWE-264 vulnerability in ldap_fluff. A fix is available for ldap_fluff — see the affected versions and patch details below.

ldap_fluff authentication bypass

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs78th percentile — riskier than 78% of all scored CVEsHighest risk
0.00%0.75%1.50%2.25%0.2%1.8%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected
💎ldap_fluff

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

The ldap_fluff gem for Ruby, as used in Red Hat CloudForms 1.1, when using Active Directory for authentication, allows remote attackers to bypass authentication via unspecified vectors.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemsldap_fluffall versions0.4.0bundle update ldap_fluff --conservative

Affected Products

1 product · 1 configurations
Application
cloudformsredhat
1 version
1.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ldap_fluff, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update ldap_fluff to 0.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-5604 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

The ldap_fluff gem for Ruby, as used in Red Hat CloudForms 1.1, when using Active Directory for authentication, allows remote attackers to bypass authentication via unspecified vectors.
O3 Security · Impact-Aware SCA

Is CVE-2012-5604 in your dependencies?

Find it across RubyGems, including transitive dependencies.

CVE-2012-5604: ldap_fluff — Fixed in 0.4.0