CVE-2003-0488

Kerio MailServer 5.6.3 - Cross-Site Scripting via add_name or alias Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2003-0488. PoCs published by David F.Madrid.

AI-analyzed exploit summary This is a writeup describing a cross-site scripting (XSS) vulnerability in Kerio Mailserver's web mail component. The vulnerability allows an attacker to inject malicious HTML code via the 'alias' parameter in the do_map module.

Description

Multiple cross-site scripting (XSS) vulnerabilities in Kerio MailServer 5.6.3 allow remote attackers to insert arbitrary web script via (1) the add_name parameter in the add_acl module, or (2) the alias parameter in the do_map module.

Exploits (2)

exploitdb WRITEUP VERIFIED
by David F.Madrid · textwebappscgi
https://www.exploit-db.com/exploits/22804

This is a writeup describing a cross-site scripting (XSS) vulnerability in Kerio Mailserver's web mail component. The vulnerability allows an attacker to inject malicious HTML code via the 'alias' parameter in the do_map module.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Kerio MailServer 5.6.3 (and possibly earlier versions)
No auth needed
Prerequisites: Victim must follow a malicious link
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by David F.Madrid · textwebappscgi
https://www.exploit-db.com/exploits/22799

This exploit demonstrates a cross-site scripting (XSS) vulnerability in Kerio Mailserver's add_acl module. The attack involves crafting a malicious URL that injects JavaScript code to steal cookies when a victim clicks the link.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Kerio MailServer 5.6.3 (and possibly earlier versions)
No auth needed
Prerequisites: Victim must click a malicious link
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/7968
Exploit, Vendor Advisory x_refsource_misc
http://nautopia.org/vulnerabilidades/kerio_mailserver.htm
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/7966
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=105596982503760&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/12367

Scores

EPSS 0.0678
EPSS Percentile 93.3%

Details

Status published
Products (1)
kerio/kerio_mailserver 5.6.3
Published Aug 07, 2003
Tracked Since Feb 18, 2026