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Vulnerability details: VCID-vr9v-p35b-67fx
Vulnerability ID VCID-vr9v-p35b-67fx
Aliases CVE-2023-23602
Summary A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1385 Missing Origin Validation in WebSockets
CWE-754 Improper Check for Unusual or Exceptional Conditions
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-23602.json
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2023-23602
cvssv3.1 6.5 https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
cvssv3.1 6.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-23602
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-01
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-02
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-03
cvssv3.1 6.5 https://www.mozilla.org/security/advisories/mfsa2023-01/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-01/
cvssv3.1 6.5 https://www.mozilla.org/security/advisories/mfsa2023-02/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-02/
cvssv3.1 6.5 https://www.mozilla.org/security/advisories/mfsa2023-03/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-03/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-23602.json
https://api.first.org/data/v1/epss?cve=CVE-2023-23602
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46871
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46877
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0430
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0616
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0767
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23598
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23601
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23602
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23603
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23605
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25728
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25729
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25730
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25732
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25735
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25737
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25742
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25744
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25746
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2162341 https://bugzilla.redhat.com/show_bug.cgi?id=2162341
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-2023-23602 https://nvd.nist.gov/vuln/detail/CVE-2023-23602
mfsa2023-01 https://www.mozilla.org/en-US/security/advisories/mfsa2023-01
mfsa2023-01 https://www.mozilla.org/security/advisories/mfsa2023-01/
mfsa2023-02 https://www.mozilla.org/en-US/security/advisories/mfsa2023-02
mfsa2023-02 https://www.mozilla.org/security/advisories/mfsa2023-02/
mfsa2023-03 https://www.mozilla.org/en-US/security/advisories/mfsa2023-03
mfsa2023-03 https://www.mozilla.org/security/advisories/mfsa2023-03/
RHSA-2023:0285 https://access.redhat.com/errata/RHSA-2023:0285
RHSA-2023:0286 https://access.redhat.com/errata/RHSA-2023:0286
RHSA-2023:0288 https://access.redhat.com/errata/RHSA-2023:0288
RHSA-2023:0289 https://access.redhat.com/errata/RHSA-2023:0289
RHSA-2023:0290 https://access.redhat.com/errata/RHSA-2023:0290
RHSA-2023:0294 https://access.redhat.com/errata/RHSA-2023:0294
RHSA-2023:0295 https://access.redhat.com/errata/RHSA-2023:0295
RHSA-2023:0296 https://access.redhat.com/errata/RHSA-2023:0296
RHSA-2023:0456 https://access.redhat.com/errata/RHSA-2023:0456
RHSA-2023:0457 https://access.redhat.com/errata/RHSA-2023:0457
RHSA-2023:0459 https://access.redhat.com/errata/RHSA-2023:0459
RHSA-2023:0460 https://access.redhat.com/errata/RHSA-2023:0460
RHSA-2023:0461 https://access.redhat.com/errata/RHSA-2023:0461
RHSA-2023:0462 https://access.redhat.com/errata/RHSA-2023:0462
RHSA-2023:0463 https://access.redhat.com/errata/RHSA-2023:0463
RHSA-2023:0476 https://access.redhat.com/errata/RHSA-2023:0476
show_bug.cgi?id=1800890 https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
USN-5816-1 https://usn.ubuntu.com/5816-1/
USN-5824-1 https://usn.ubuntu.com/5824-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-23602.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:U/C:N/I:H/A:N Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-10T18:16:34Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-23602
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:U/C:N/I:H/A:N Found at https://www.mozilla.org/security/advisories/mfsa2023-01/
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-10T18:16:34Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-01/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://www.mozilla.org/security/advisories/mfsa2023-02/
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-10T18:16:34Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-02/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://www.mozilla.org/security/advisories/mfsa2023-03/
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-10T18:16:34Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-03/
Exploit Prediction Scoring System (EPSS)
Percentile 0.3264
EPSS Score 0.00125
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:32.963031+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-02.yml 37.0.0