CVE-2018-5167 — Mozilla: Improper linkification of chrome: and javascript: content in web console and JavaScript debugger

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MEDIUM

Mozilla: Improper linkification of chrome: and javascript: content in web console and JavaScript debugger

Published Jun 11, 2018

4.3

MEDIUM

CVSS 3.0

EPSS 1.44%

Description

The web console and JavaScript debugger do not sanitize all output that can be hyperlinked. Both will display "chrome:" links as active, clickable hyperlinks in their output. Web sites should not be able to directly link to internal chrome pages. Additionally, the JavaScript debugger will display "javascript:" links, which users could be tricked into clicking by malicious sites. This vulnerability affects Firefox < 60.

Affected products

Vendor Mozilla Product Firefox Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <60

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Mozilla

Firefox

n/a

Version	Status	Constraints
unspecified	affected	<60

Red Hat Enterprise Linux 6

firefox

Not affected
Red Hat Enterprise Linux 6

thunderbird

Not affected
Red Hat Enterprise Linux 7

firefox

Not affected
Red Hat Enterprise Linux 7

thunderbird

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 6	firefox	Not affected	n/a
Red Hat Enterprise Linux 6	thunderbird	Not affected	n/a
Red Hat Enterprise Linux 7	firefox	Not affected	n/a
Red Hat Enterprise Linux 7	thunderbird	Not affected	n/a

Remediation

No remediation recorded yet.

Metrics

1.44% 0.01443

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01443

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (14 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.44% (0.01443)	72.29th	v5 (v2026.06.15)
Jun 15, 2026	1.44% (0.01443)	69.70th	v5 (v2026.06.15)
Mar 30, 2025	0.94% (0.00942)	74.19th	v4 (v2025.03.14)
Mar 29, 2025	2.20% (0.02203)	74.00th	v4 (v2025.03.14)
Mar 17, 2025	0.96% (0.00960)	74.91th	v4 (v2025.03.14)
Dec 12, 2024	0.27% (0.00265)	66.62th	v3 (v2023.03.01)
May 3, 2024	0.27% (0.00265)	65.95th	v3 (v2023.03.01)
Nov 2, 2023	0.27% (0.00265)	63.93th	v3 (v2023.03.01)
Sep 3, 2023	0.34% (0.00337)	67.64th	v3 (v2023.03.01)
Mar 7, 2023	0.38% (0.00376)	68.50th	v3 (v2023.03.01)
Mar 6, 2023	1.02% (0.01018)	40.69th	v2 (v2022.01.01)
Feb 4, 2022	1.02% (0.01018)	19.50th	v2 (v2022.01.01)
Feb 3, 2022	1.32% (0.01324)	31.25th	v5 (v2026.06.15)
Apr 14, 2021	1.32% (0.01324)	0.00th	v1

Weaknesses (2)

CWE-20

Improper Input Validation

CWE-79

Cross-site Scripting (XSS)

References (10)

http://www.securityfocus.com/bid/104139
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040896
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2018-5167
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1447969
x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1576268
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2018-5167
https://usn.ubuntu.com/3645-1/
vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-5167
https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5167
https://www.mozilla.org/security/advisories/mfsa2018-11/
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/104139		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040896		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2018-5167		Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1447969		x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1576268		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2018-5167
https://usn.ubuntu.com/3645-1/		vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-5167
https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5167
https://www.mozilla.org/security/advisories/mfsa2018-11/		x_refsource_CONFIRMVendor Advisory