CVE-2013-4940
YUI Cross-site Scripting (XSS) vulnerability
EPSS 0.34%
Description
Cross-site scripting (XSS) vulnerability in io.swf in the IO Utility component in Yahoo! YUI 3.10.2, as used in Moodle through 2.1.10, 2.2.x before 2.2.11, 2.3.x before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.1, and other products, allows remote attackers to inject arbitrary web script or HTML via a crafted string in a URL. NOTE: this vulnerability exists because of a CVE-2013-4939 regression.
How to fix CVE-2013-4940
To remediate CVE-2013-4940, upgrade the affected package to a fixed version below.
- npm/yui—upgrade to 3.10.11 or later
- —upgrade to 2.2.11 or later
Is CVE-2013-4940 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 3.0.0, < 3.10.11
- from 0, < 2.2.11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |