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Vulnerabilities

Vulnerability · CVE-2011-2688

mod_authnz_external_project mod_authnz_external Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Published Feb 7, 2025 · catalog updated Feb 7, 2025 · mod_authnz_external_project mod_authnz_external Improper Neutralization

Patch now

CVE-2011-2688 is in the CISA known-exploited catalog. Confirm mod_authnz_external_project mod_authnz_external Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
5.66%
Remediation
Remediation guidance
Affected products
vendor mod_authnz_external_project mod_authnz_external

SQL injection vulnerability in mysql/mysql-auth.pl in the mod_authnz_external module 3.2.5 and earlier for the Apache HTTP Server allows remote attackers to execute arbitrary SQL commands via the user field.

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.

  • vendor mod_authnz_external_project mod_authnz_externalversion unspecified

How to fix CVE-2011-2688

What to do

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

Should you patch?

CVE-2011-2688 is in the CISA known-exploited catalog. Confirm mod_authnz_external_project mod_authnz_external Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 5.66%. The CISA KEV listing is the exploitation evidence. 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. Feb 7, 2025 · VulnCheck KEV

    Detected

    SQL injection vulnerability in mysql/mysql-auth.pl in the mod_authnz_external module 3.2.5 and earlier for the Apache HTTP Server allows remote attackers to execute arbitrary SQL commands via the user field.

  2. Feb 7, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2011-2688

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2011-2688

    30-day exploitation probability 5.7%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2011-2688

    SQL injection vulnerability in mysql/mysql-auth.pl in the mod_authnz_external module 3.2.5 and earlier for the Apache HTTP Server allows remote attackers to execute arbitrary SQL commands via the user field.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.