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Vulnerability details: VCID-8tzv-gj9z-fkev
Vulnerability ID VCID-8tzv-gj9z-fkev
Aliases CVE-2019-11761
Summary By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-862 Missing Authorization
CWE-749 Exposed Dangerous Method or Function
System Score Found at
cvssv3 5.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11761.json
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
epss 0.00473 https://api.first.org/data/v1/epss?cve=CVE-2019-11761
cvssv2 5.8 https://nvd.nist.gov/vuln/detail/CVE-2019-11761
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2019-11761
archlinux Critical https://security.archlinux.org/AVG-1054
archlinux Critical https://security.archlinux.org/AVG-1055
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-33
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-34
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-35
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11761.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11761
https://bugzilla.mozilla.org/show_bug.cgi?id=1561502
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11755
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11757
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11759
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11760
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11761
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11762
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11763
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11764
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15903
https://security.gentoo.org/glsa/202003-10
https://www.mozilla.org/security/advisories/mfsa2019-33/
https://www.mozilla.org/security/advisories/mfsa2019-35/
1764442 https://bugzilla.redhat.com/show_bug.cgi?id=1764442
ASA-201910-15 https://security.archlinux.org/ASA-201910-15
ASA-201910-16 https://security.archlinux.org/ASA-201910-16
AVG-1054 https://security.archlinux.org/AVG-1054
AVG-1055 https://security.archlinux.org/AVG-1055
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:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
CVE-2019-11761 https://nvd.nist.gov/vuln/detail/CVE-2019-11761
mfsa2019-33 https://www.mozilla.org/en-US/security/advisories/mfsa2019-33
mfsa2019-34 https://www.mozilla.org/en-US/security/advisories/mfsa2019-34
mfsa2019-35 https://www.mozilla.org/en-US/security/advisories/mfsa2019-35
RHSA-2019:3193 https://access.redhat.com/errata/RHSA-2019:3193
RHSA-2019:3196 https://access.redhat.com/errata/RHSA-2019:3196
RHSA-2019:3210 https://access.redhat.com/errata/RHSA-2019:3210
RHSA-2019:3237 https://access.redhat.com/errata/RHSA-2019:3237
RHSA-2019:3281 https://access.redhat.com/errata/RHSA-2019:3281
RHSA-2019:3756 https://access.redhat.com/errata/RHSA-2019:3756
USN-4165-1 https://usn.ubuntu.com/4165-1/
USN-4202-1 https://usn.ubuntu.com/4202-1/
USN-4335-1 https://usn.ubuntu.com/4335-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11761.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: AV:N/AC:M/Au:N/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11761
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:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11761
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 0.63704
EPSS Score 0.00473
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:57.525133+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-33.yml 37.0.0