CVE-2015-4518

Name: CVE-2015-4518
Creator: NVD / NIST
Published: 2015-11-05T05:59:04.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.28%

Last modified Jun 17, 2026

CVE-2015-4518 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.28% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.28%

80.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	<= 41.0.2

References

Timeline

Published: Nov 5, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4518?

How severe is CVE-2015-4518?

Severity scoring for CVE-2015-4518 is pending analysis. The EPSS model estimates a 2.28% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4518?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4518?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST