CVE-2009-5017

medium

Description

Mozilla Firefox before 3.6 Beta 3 does not properly handle overlong UTF-8 encoding, which makes it easier for remote attackers to bypass cross-site scripting (XSS) protection mechanisms via a crafted string, a different vulnerability than CVE-2010-1210.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=522634

https://bugzilla.mozilla.org/show_bug.cgi?id=511859

http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0

Details

Source: Mitre, NVD

Published: 2010-11-12

Updated: 2025-04-11

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00166