{"cve":"CVE-2013-4939","nvd":{"published":"2013-07-29T13:59:20.887","modified":"2026-06-16T23:58:07.723","status":"Modified","description":"Cross-site scripting (XSS) vulnerability in io.swf in the IO Utility component in Yahoo! YUI 3.0.0 through 3.9.1, 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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-39678","http://yuilibrary.com/support/20130515-vulnerability/","https://lists.apache.org/thread.html/72837f969cdf9b63a7e7337edd069fa3b3950eea7c997cc2ff61aa0c%40%3Cissues.zookeeper.apache.org%3E","https://lists.apache.org/thread.html/d8b9403dbab85a51255614949938b619bd03b1c944c76c48c6996a0e%40%3Cdev.zookeeper.apache.org%3E","https://moodle.org/mod/forum/discuss.php?d=232496"],"products":["moodle:moodle","yahoo:yui"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-4939","score":0.01492,"percentile":0.74129,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mj87-8xf8-fp4w","url":"https://osv.dev/vulnerability/GHSA-mj87-8xf8-fp4w","summary":"Cross-Site Scripting in yui","modified":"2023-11-08T03:57:24.763515Z","packages":[{"ecosystem":"npm","name":"yui","purl":"pkg:npm/yui","ranges":["<3.10.3"],"fixed":["3.10.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}