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Vulnerability details: VCID-jh6n-bau7-byhg
Vulnerability ID VCID-jh6n-bau7-byhg
Aliases CVE-2011-2999
Summary Mozilla developer Boris Zbarsky reported that a frame named "location" could shadow the window.location object unless a script in a page grabbed a reference to the true object before the frame was created. Because some plugins use the value of window.location to determine the page origin this could fool the plugin into granting the plugin content access to another site or the local file system in violation of the Same Origin Policy. This flaw allows circumvention of the fix added for MFSA 2010-10.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
epss 0.00722 https://api.first.org/data/v1/epss?cve=CVE-2011-2999
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2011-38
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-2999.json
https://api.first.org/data/v1/epss?cve=CVE-2011-2999
741904 https://bugzilla.redhat.com/show_bug.cgi?id=741904
CVE-2011-2999 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2999
GLSA-201301-01 https://security.gentoo.org/glsa/201301-01
mfsa2011-38 https://www.mozilla.org/en-US/security/advisories/mfsa2011-38
RHSA-2011:1341 https://access.redhat.com/errata/RHSA-2011:1341
RHSA-2011:1342 https://access.redhat.com/errata/RHSA-2011:1342
RHSA-2011:1343 https://access.redhat.com/errata/RHSA-2011:1343
RHSA-2011:1344 https://access.redhat.com/errata/RHSA-2011:1344
USN-1210-1 https://usn.ubuntu.com/1210-1/
USN-1213-1 https://usn.ubuntu.com/1213-1/
USN-1222-1 https://usn.ubuntu.com/1222-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.72835
EPSS Score 0.00722
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T08:27:58.609785+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2011/mfsa2011-38.md 38.6.0