CVE-2015-4518: mozilla firefox
Vulnerability summary
CVE-2015-4518 is a medium (CVSS 4.3) vulnerability in mozilla firefox. EPSS estimates a 1.97% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.
Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 05-11-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.97%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
Decrease -0.31 pp
From 2.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Mozilla1 product
- firefox≤ 41.0.2
Ubuntu1 product
- firefox< 42.0+build2-0ubuntu0.14.04.1
2 vendors · 2 products
References
12 links- bugzilla.mozilla.org/show_bug.cgi?id=1136692X Refsource CONFIRM
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1182778X Refsource CONFIRM