CVE-1999-1357

High CVSS 7.5

Published 1999-10-05 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-1357, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Netscape Communicator 4.04 through 4.7 (and possibly other versions) in various UNIX operating systems converts the 0x8b character to a "<" sign, and the 0x9b character to a ">" sign, which could allow remote attackers to attack other clients via cross-site scripting (CSS) in CGI programs that do not filter these characters.

Sources

NVD record for CVE-1999-1357

CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P