CVE-2008-4456
CWE-79Published: October 6, 2008· Updated: Jun 16, 2026
Official Description
Cross-site scripting (XSS) vulnerability in the command-line client in MySQL 5.0.26 through 5.0.45, and other versions including versions later than 5.0.45, when the --html option is enabled, allows attackers to inject arbitrary web script or HTML by placing it in a database cell, which might be accessed by this client when composing an HTML document. NOTE: as of 20081031, the issue has not been fixed in MySQL 5.0.67.
Technical Analysis
CVE-2008-4456 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A proof-of-concept (PoC) exploit exists for CVE-2008-4456. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (46)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2008-4456 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts