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CVE Record

CVE-2013-4940: Cross-site scripting (XSS) vulnerability in io.swf in the IO Utility component in Yahoo!

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2013-4940 is an old cross-site scripting issue in Yahoo YUI's io.swf, used by affected Moodle versions. A malicious URL could cause browser-side script or HTML injection. Business risk is mainly legacy internet-facing Moodle or products still shipping this vulnerable YUI component. Exposure is most likely in legacy Moodle deployments or other web applications that still include YUI 3.10.2 io.swf. Modern, maintained Moodle installations should be checked against vendor-fixed branch versions rather than assumed vulnerable. Treat as a legacy web exposure cleanup item. It is not KEV-listed in the provided sources, but exposed vulnerable Moodle or bundled YUI files can create account and session risk through XSS. Mitigation focus: Upgrade Moodle beyond the affected branch versions identified in the CVE record.; Apply Moodle fixes associated with MDL-39678 where upgrading is branch-constrained.; Replace or remove vulnerable YUI 3.10.2 io.swf copies where present..

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0ADP providers
2Source links

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Affected products

Products and packages named in the record

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