CVE-2016-5262
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 process JavaScript event-handler attributes of a MARQUEE element within a sandboxed IFRAME element that lacks the sandbox="allow-scripts" attribute value, which makes it easier for remote…
Does this matter?
Lower severity and a low EPSS score (1.46%). Track it; it rarely justifies an emergency change on its own.
Description
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 process JavaScript event-handler attributes of a MARQUEE element within a sandboxed IFRAME element that lacks the sandbox="allow-scripts" attribute value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.46% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mozilla/firefox · oracle/linux
- Source
- security@mozilla.org
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
- http://rhn.redhat.com/errata/RHSA-2016-1551.html
- http://www.debian.org/security/2016/dsa-3640
- http://www.mozilla.org/security/announce/2016/mfsa2016-76.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.securityfocus.com/bid/92258
- http://www.securitytracker.com/id/1036508
- http://www.ubuntu.com/usn/USN-3044-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1277475Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/201701-15
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
- http://rhn.redhat.com/errata/RHSA-2016-1551.html
- http://www.debian.org/security/2016/dsa-3640
- http://www.mozilla.org/security/announce/2016/mfsa2016-76.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.securityfocus.com/bid/92258
- http://www.securitytracker.com/id/1036508
- http://www.ubuntu.com/usn/USN-3044-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1277475Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/201701-15
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.