CVE-2015-4518

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-11-05 · updated 2026-06-17
Weakness: CWE-79

Description

The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.

Affected products

Mozilla Firefox: through 41.0.2

References

http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.html
http://www.mozilla.org/security/announce/2015/mfsa2015-118.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securitytracker.com/id/1034069
http://www.ubuntu.com/usn/USN-2785-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1136692
https://bugzilla.mozilla.org/show_bug.cgi?id=1182778
https://security.gentoo.org/glsa/201512-10
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.html
http://www.mozilla.org/security/announce/2015/mfsa2015-118.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securitytracker.com/id/1034069

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