Issuu Panel WordPress plugin: Unauthenticated file inclusion via ajax-docs.php
Summary
The Issuu Panel plugin for WordPress before version 1.6.6 contains a PHP file inclusion flaw in the AJAX handler menu/documento/requests/ajax-docs.php. The 'abspath' parameter is passed to require() without adequate validation. An unauthenticated remote attacker can include remote or local files, which can lead to remote code execution or disclosure of local files such as configuration data and credentials. The CVE record states that exploitation has been observed in the wild, and the CNA rates the CVSS v4.0 score as 9.2 (Critical).
Affected
- Issuu Panel plugin for WordPress, versions 1.0 to before 1.6.6
- Default configuration: not affected unless the plugin is installed
Fixed in
- Version 1.6.6 or later (per the CVE record; not confirmed from the vendor changelog)
Workaround
- No vendor-issued workaround known.
- Restrict web access to the plugin's requests/ path at the web server or WAF as a temporary measure, and test first, as this may break the plugin.
Exploitation
- Exploitation in the wild reported; first observed by Shadowserver Foundation on 2023-10-20 (per CVE record, not independently verified).
- Listed in VulnCheck KEV; not listed in CISA KEV according to a third-party source (unverified).
- Public exploit-related entries and a public Nuclei detection template exist.
- Attack requires no authentication and only plain HTTP GET requests.
Our recommendation
- Inventory all WordPress sites for the Issuu Panel plugin.
- Update to version 1.6.6 or later, or remove the plugin if it is not needed.
- Review web server logs for requests to ajax-docs.php.
- Verify the fix in the plugin changelog and check the CISA KEV catalogue directly.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE record via VulnCheck advisory www.vulncheck.com
- WordPress.org plugin page wordpress.org
- Nuclei detection template github.com
- CXSecurity entry cxsecurity.com
- Packet Storm entry packetstorm.news
- Vulners NVD record vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 04:11.
Original description (NVD)
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.
NVD references (5)
- https://cxsecurity.com/issue/WLB-2016030131
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/issuu-panel-lfi…
- https://packetstorm.news/files/id/136398/
- https://wordpress.org/plugins/issuu-panel/
- https://www.vulncheck.com/advisories/issuu-panel-wordpress-plugin-1.6.6-file-inclusion-via-ajax-docs-php
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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