Search for vulnerabilities
Vulnerability details: VCID-kj43-2ged-nfhd
Vulnerability ID VCID-kj43-2ged-nfhd
Aliases CVE-2019-11743
Summary Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-829 Inclusion of Functionality from Untrusted Control Sphere
CWE-203 Observable Discrepancy
System Score Found at
cvssv3 3.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11743.json
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
epss 0.00989 https://api.first.org/data/v1/epss?cve=CVE-2019-11743
cvssv3.1 6.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2019-11743
cvssv3.1 3.7 https://nvd.nist.gov/vuln/detail/CVE-2019-11743
archlinux High https://security.archlinux.org/AVG-1036
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-27
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-29
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-30
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11743.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11743
https://bugzilla.mozilla.org/show_bug.cgi?id=1560495
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11742
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11743
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11744
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11746
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11752
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9812
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/201911-07
https://w3c.github.io/navigation-timing
https://www.mozilla.org/security/advisories/mfsa2019-25/
https://www.mozilla.org/security/advisories/mfsa2019-26/
https://www.mozilla.org/security/advisories/mfsa2019-27/
https://www.mozilla.org/security/advisories/mfsa2019-29/
https://www.mozilla.org/security/advisories/mfsa2019-30/
1748654 https://bugzilla.redhat.com/show_bug.cgi?id=1748654
ASA-201909-2 https://security.archlinux.org/ASA-201909-2
AVG-1036 https://security.archlinux.org/AVG-1036
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
CVE-2019-11743 https://nvd.nist.gov/vuln/detail/CVE-2019-11743
mfsa2019-25 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
mfsa2019-26 https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
mfsa2019-27 https://www.mozilla.org/en-US/security/advisories/mfsa2019-27
mfsa2019-29 https://www.mozilla.org/en-US/security/advisories/mfsa2019-29
mfsa2019-30 https://www.mozilla.org/en-US/security/advisories/mfsa2019-30
RHSA-2019:2663 https://access.redhat.com/errata/RHSA-2019:2663
RHSA-2019:2694 https://access.redhat.com/errata/RHSA-2019:2694
RHSA-2019:2729 https://access.redhat.com/errata/RHSA-2019:2729
RHSA-2019:2773 https://access.redhat.com/errata/RHSA-2019:2773
RHSA-2019:2774 https://access.redhat.com/errata/RHSA-2019:2774
RHSA-2019:2807 https://access.redhat.com/errata/RHSA-2019:2807
USN-4122-1 https://usn.ubuntu.com/4122-1/
USN-4150-1 https://usn.ubuntu.com/4150-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11743.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11743
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11743
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7593
EPSS Score 0.00989
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:58.117835+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-27.yml 37.0.0