CVE-2008-4932

U-Mail Webmail Server 4.91 - Arbitrary File Write via Filesystem Module Path Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2008-4932. PoCs published by Shennan Wang.

AI-analyzed exploit summary This exploit leverages an input validation error in U-Mail Webmail's 'edit.php' to write arbitrary files via a malicious HTTP POST request. The payload includes PHP code that executes system commands via $_GET[cmd], enabling remote code execution (RCE).

Description

webmail/modules/filesystem/edit.php in U-Mail Webmail server 4.91 allows remote attackers to overwrite arbitrary files via an absolute pathname in the path parameter and arbitrary content in the content parameter. NOTE: this can be leveraged for code execution by writing to a file under the web document root.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Shennan Wang · textwebappsphp
https://www.exploit-db.com/exploits/6898

This exploit leverages an input validation error in U-Mail Webmail's 'edit.php' to write arbitrary files via a malicious HTTP POST request. The payload includes PHP code that executes system commands via $_GET[cmd], enabling remote code execution (RCE).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: U-Mail Webmail 4.91
Auth required
Prerequisites: Valid authentication credentials · Access to the 'edit.php' endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/32540
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/46300
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/497961/100/0/threaded
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/32013
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/4565
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/6898

Scores

EPSS 0.1111
EPSS Percentile 93.6%

Details

CWE
CWE-20
Status published
Products (1)
comingchina/u-mail_webmail_server 4.91
Published Nov 05, 2008
Tracked Since Feb 18, 2026