EUVD-2026-87534
GHSA-hj83-mg7w-xg78
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Unauthenticated (PR:N) network XSS, but AC:H because attacker must control a prefix-matching origin and UI:R because an admin must visit the malicious page; admin-session takeover yields C/I/A:H.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
7DescriptionCVE.org
The File Manager WordPress plugin before 8.0.5, FileOrganizer WordPress plugin before 1.2.1, File Manager Pro WordPress plugin before 2.1.3 do not correctly validate the origin of window messages received by the file browser they load on their admin screens, accepting any origin that is a leading string prefix of the site's own address, which allows an unauthenticated attacker to run arbitrary JavaScript in the session of a logged-in administrator who visits a page under their control.
The defect is in the file-manager library all three bundle, and every version below 2.1.70 carries it. Updating the bundled library closes it.
Articles & Coverage 1
AnalysisAI
Cross-site scripting in the WordPress File Manager plugin (below 8.0.5), FileOrganizer (below 1.2.1) and File Manager Pro (below 2.1.3) allows an unauthenticated attacker to run arbitrary JavaScript inside the session of a logged-in administrator, because the file browser these plugins embed accepts window.postMessage events from any origin that is merely a leading-string prefix of the victim site's own address. Exploitation requires the administrator to be logged in and to visit an attacker-controlled page on such a prefix origin (for example a domain whose name begins with the victim's hostname), which is reflected in the CVSS vector as UI:R with AC:H while PR:N confirms no attacker authentication is needed. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all of: (1) the site running File Manager <8.0.5, File Manager Pro <2.1.3, or FileOrganizer <1.2.1 (bundled file-manager library below 2.1.70); (2) an administrator being logged in AND actively visiting an attacker-controlled web page (UI:R social engineering); and (3) the attacker controlling a web origin that is a leading-string prefix of the victim site's own address, because the file browser's window.postMessage handler wrongly accepts any origin that is a prefix of the site address rather than an exact match. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but conditional risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: update File Manager to 8.0.5, FileOrganizer to 1.2.1, and File Manager Pro to 2.1.3; these releases ship the fixed file-manager library at 2.1.70 or later, which performs an exact origin comparison instead of a prefix match. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress installations running File Manager (versions below 8.0.5), FileOrganizer (below 1.2.1), or File Manager Pro (below 2.1.3) and immediately upgrade to the patched versions: File Manager 8.0.5, FileOrganizer 1.2.1, and File Manager Pro 2.1.3. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible by
ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Rated critical severity (C
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP c
Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows
The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
Same weakness CWE-79 – Cross-site Scripting (XSS)
View allShare
External POC / Exploit Code
Leaving vuln.today