ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2017-16562

userproplugin userpro Improper Authentication

Published Dec 5, 2022 · catalog updated Dec 5, 2022 · userproplugin userpro Improper Authentication

Patch now

CVE-2017-16562 is in the CISA known-exploited catalog. Confirm userproplugin userpro Improper Authentication against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (userproplugin userpro Improper Authentication).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
27.37%
Remediation
Remediation guidance
Affected products
vendor userproplugin userpro

The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.

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 userproplugin userproversion unspecified

How to fix CVE-2017-16562

What to do

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

Should you patch?

CVE-2017-16562 is in the CISA known-exploited catalog. Confirm userproplugin userpro Improper Authentication 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 27.37%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

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. Dec 5, 2022 · VulnCheck KEV

    Detected

    The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.

  2. Dec 5, 2022 · 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-2017-16562

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2017-16562

    30-day exploitation probability 27.4%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2017-16562

    The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.

    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.