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Vulnerability details: VCID-1e39-62g9-j7d2
Vulnerability ID VCID-1e39-62g9-j7d2
Aliases CVE-2013-4939
GHSA-mj87-8xf8-fp4w
Summary Cross-Site Scripting in yui Affected versions of `yui` are vulnerable to cross-site scripting in the `uploader.swf` and `io.swf` utilities, via script injection in the url. ## Recommendation YUI has published their recommendation to fix this issue. Their recommendation is to: - Delete self-hosted copies of these files if you are not using them - Use the Yahoo! CDN hosted files - Use the patched files provided on the YUI Library [here](https://yuilibrary.com/support/20130515-vulnerability/#resolution).
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
generic_textual MODERATE http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-39678
epss 0.0031 https://api.first.org/data/v1/epss?cve=CVE-2013-4939
epss 0.0031 https://api.first.org/data/v1/epss?cve=CVE-2013-4939
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-mj87-8xf8-fp4w
cvssv3 5.3 https://github.com/nodejs/security-wg/blob/main/vuln/npm/332.json
generic_textual MODERATE https://lists.apache.org/thread.html/72837f969cdf9b63a7e7337edd069fa3b3950eea7c997cc2ff61aa0c@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/d8b9403dbab85a51255614949938b619bd03b1c944c76c48c6996a0e@%3Cdev.zookeeper.apache.org%3E
generic_textual MODERATE https://moodle.org/mod/forum/discuss.php?d=232496
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2013-4939
generic_textual MODERATE https://www.npmjs.com/advisories/332
generic_textual MODERATE https://yuilibrary.com/support/20130515-vulnerability
cvssv3 5.3 https://yuilibrary.com/support/20130515-vulnerability/)
generic_textual MODERATE http://yuilibrary.com/support/20130515-vulnerability
Reference id Reference type URL
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-39678
https://api.first.org/data/v1/epss?cve=CVE-2013-4939
https://lists.apache.org/thread.html/72837f969cdf9b63a7e7337edd069fa3b3950eea7c997cc2ff61aa0c@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/d8b9403dbab85a51255614949938b619bd03b1c944c76c48c6996a0e@%3Cdev.zookeeper.apache.org%3E
https://moodle.org/mod/forum/discuss.php?d=232496
https://nvd.nist.gov/vuln/detail/CVE-2013-4939
https://www.npmjs.com/advisories/332
https://yuilibrary.com/support/20130515-vulnerability
https://yuilibrary.com/support/20130515-vulnerability/
https://yuilibrary.com/support/20130515-vulnerability/)
http://yuilibrary.com/support/20130515-vulnerability
http://yuilibrary.com/support/20130515-vulnerability/
332 https://github.com/nodejs/security-wg/blob/main/vuln/npm/332.json
GHSA-mj87-8xf8-fp4w https://github.com/advisories/GHSA-mj87-8xf8-fp4w
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.53623
EPSS Score 0.0031
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:16:24.588599+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/09/GHSA-mj87-8xf8-fp4w/GHSA-mj87-8xf8-fp4w.json 36.1.3