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Vulnerabilities

Vulnerability · CVE-2012-3526

The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application cras…

Published Sep 5, 2012 · catalog updated Jun 16, 2026 · thomas eibner mod rpaf

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2012-3526. EPSS is 6.95%. Act only if a listed version of thomas eibner mod rpaf is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
6.95%
Remediation
Advisory link
Affected products
cpe thomas eibner/mod rpaf

The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application crash) via multiple X-Forwarded-For headers in a request.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe thomas eibner/mod rpaf0.5
  • cpe thomas eibner/mod rpaf0.6

How to fix CVE-2012-3526

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2012-3526. EPSS is 6.95%. Act only if a listed version of thomas eibner mod rpaf is installed.

Which versions are affected?

Compare what you have installed with thomas eibner/mod rpaf 0.5; thomas eibner/mod rpaf 0.6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 6.95%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 5, 2012 · Monitored products — critical

    Detected

    The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application crash) via multiple X-Forwarded-For headers in a request.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application crash) via multiple X-Forwarded-For headers in a request.

Sources

  • CVE.orgVulnerability recordCVE-2012-3526

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2012-3526

    The reverse proxy add forward module (mod_rpaf) 0.5 and 0.6 for the Apache HTTP Server allows remote attackers to cause a denial of service (server or application crash) via multiple X-Forwarded-For headers in a request.

    nvd.nist.gov
  • urlscan.ioThreat intelligenceCVE-2012-3526
    urlscan.io

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • urlscan.ioNov 6, 2026
  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 4, 2026