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Vulnerability details: VCID-hh79-j7tj-7qhc
Vulnerability ID VCID-hh79-j7tj-7qhc
Aliases CVE-2018-12358
Summary Service workers can use redirection to avoid the tainting of cross-origin resources in some instances, allowing a malicious site to read responses which are supposed to be opaque.
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-200 Exposure of Sensitive Information to an Unauthorized Actor
System Score Found at
cvssv3 4.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12358.json
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00399 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00399 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00399 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
epss 0.00399 https://api.first.org/data/v1/epss?cve=CVE-2018-12358
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-12358
cvssv3 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-12358
archlinux Critical https://security.archlinux.org/AVG-727
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-15
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12358.json
https://api.first.org/data/v1/epss?cve=CVE-2018-12358
https://bugzilla.mozilla.org/show_bug.cgi?id=1467852
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/201810-01
https://www.mozilla.org/security/advisories/mfsa2018-15/
http://www.securitytracker.com/id/1041193
1595023 https://bugzilla.redhat.com/show_bug.cgi?id=1595023
ASA-201806-14 https://security.archlinux.org/ASA-201806-14
AVG-727 https://security.archlinux.org/AVG-727
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:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
CVE-2018-12358 https://nvd.nist.gov/vuln/detail/CVE-2018-12358
mfsa2018-15 https://www.mozilla.org/en-US/security/advisories/mfsa2018-15
USN-3705-1 https://usn.ubuntu.com/3705-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12358.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:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/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-2018-12358
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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12358
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 0.59482
EPSS Score 0.00391
Published At Aug. 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:52.234126+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2018/mfsa2018-15.yml 37.0.0