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Vulnerabilities

Vulnerability · CVE-2016-20101

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

Published Oct 20, 2026 · catalog updated Oct 22, 2026 · Pedro Marcelo Issuu Panel

Patch now

CVE-2016-20101 is in the CISA known-exploited catalog. Confirm Pedro Marcelo Issuu Panel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.40%
Remediation
Remediation guidance
Affected products
vendor Pedro Marcelo Issuu Panel

Issuu Panel plugin for WordPress before 1.6.6 contains a PHP file inclusion vulnerability that allows unauthenticated attackers to include remote or local files through the 'abspath' parameter. Attackers can send GET requests to menu/documento/requests/ajax-docs.php with a crafted abspath value passed to require() to execute remote PHP code or include local files. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.

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 Pedro Marcelo Issuu Panelversion unspecified

How to fix CVE-2016-20101

What to do

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

Should you patch?

CVE-2016-20101 is in the CISA known-exploited catalog. Confirm Pedro Marcelo Issuu Panel 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?

CWE-98: PHP Remote File Inclusion. EPSS 0.40%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 20, 2026 · VulnCheck KEV

    Detected

    Issuu Panel plugin for WordPress before 1.6.6 contains a PHP file inclusion vulnerability that allows unauthenticated attackers to include remote or local files through the 'abspath' parameter. Attackers can send GET requests to menu/documento/requests/ajax-docs.php with a crafted abspath value passed to require() to execute remote PHP code or include local files. Exploitation evidence was first o

  2. Oct 20, 2026 · CISA KEV

    Known exploited

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

  3. Oct 22, 2026 · NIST NVD

    Updated

    Issuu Panel plugin for WordPress before 1.6.6 contains a PHP file inclusion vulnerability that allows unauthenticated attackers to include remote or local files through the 'abspath' parameter. Attackers can send GET requests to menu/documento/requests/ajax-docs.php with a crafted abspath value passed to require() to execute remote PHP code or include local files. Exploitation evidence was first o

Sources

  • CVE.orgVulnerability recordCVE-2016-20101

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-20101

    30-day exploitation probability 0.40%

    first.org
  • NIST NVDVulnerability recordCVE-2016-20101

    Issuu Panel plugin for WordPress before 1.6.6 contains a PHP file inclusion vulnerability that allows unauthenticated attackers to include remote or local files through the 'abspath' parameter. Attackers can send GET requests to menu/documento/requests/ajax-docs.php with a crafte

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2016-20101

    Issuu Panel plugin for WordPress before 1.6.6 contains a PHP file inclusion vulnerability that allows unauthenticated attackers to include remote or local files through the 'abspath' parameter. Attackers can send GET requests to menu/documento/requests/ajax-docs.php with a crafte

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.