EUVD-2026-42736
GHSA-v64j-9r6x-4fv6
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network CSRF needs no attacker privileges (PR:N) but mandatory admin interaction (UI:R); config tampering chaining to PHP RCE yields high C/I/A, scope unchanged as impact stays within the app.
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
Cotonti Siena 0.9.26 and earlier contains a cross-site request forgery vulnerability that allows unauthenticated attackers to modify administrator configuration by tricking a logged-in administrator into submitting a forged POST request to the admin.php config update handler, which never invokes the application's CSRF validation function. Attackers can disable the PFS module's file extension whitelist by setting pfsfilecheck to 0, enabling any user with PFS access to upload and execute arbitrary PHP files on the server.
AnalysisAI
Cross-site request forgery in Cotonti Siena (versions 0.9.26 and earlier) lets remote attackers alter administrator configuration by luring an authenticated admin into loading an attacker-controlled page that auto-submits a forged POST to the admin.php config update handler, which never calls the CMS's own CSRF validation routine. The highest-value abuse sets the PFS module option pfsfilecheck to 0, disabling the file-extension whitelist so any account with PFS (Personal File Storage) access can upload and execute arbitrary PHP, turning a CSRF into server-side code execution. …
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
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Cotonti Siena administrator to have an active session and to be socially engineered into loading attacker-controlled content that submits the forged POST to the admin.php config-update endpoint (CVSS UI:P). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H, base 8.7) is internally consistent with a CSRF: network reach, low complexity, no attacker privileges, but Passive user interaction is mandatory because a logged-in administrator must be tricked into loading the malicious page. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a web page containing a hidden auto-submitting form (or crafted request) targeting admin.php's config handler and sends the link to a Cotonti administrator via phishing; when the admin - still logged in - opens it, their browser submits the forged POST and silently sets pfsfilecheck to 0. The attacker (or any confederate account with PFS access) then uploads a PHP webshell that passed the now-disabled extension check and requests it directly to run arbitrary code on the server. … |
| Remediation | Upgrade to a Cotonti Siena release later than 0.9.26 that adds CSRF-token validation to the admin.php config-update handler; no vendor-released fixed version number was provided in the input, so consult the VulnCheck advisory (https://www.vulncheck.com/advisories/cotonti-siena-csrf-via-admin-php-config-update-endpoint) and the official Cotonti project channels for the exact patched build before deploying - do not assume a version that is not confirmed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all Cotonti Siena deployments running version 0.9.26 or earlier. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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
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
NetAlertX (formerly PiAlert) versions 23.01.14 through 24.x before 24.10.12 allow unauthenticated command injection thro
The GiveWP - Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all
Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
View allShare
External POC / Exploit Code
Leaving vuln.today