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Vulnerability details: VCID-kn3f-cx36-17h2
Vulnerability ID VCID-kn3f-cx36-17h2
Aliases CVE-2017-7788
Summary When an iframe has a sandbox attribute and its content is specified using srcdoc, that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included allow-same-origin.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-863 Incorrect Authorization
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7788.json
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
epss 0.01918 https://api.first.org/data/v1/epss?cve=CVE-2017-7788
cvssv2 7.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 5.4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-7788
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-7788
archlinux Critical https://security.archlinux.org/AVG-375
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7788.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7788
https://bugzilla.mozilla.org/show_bug.cgi?id=1073952
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-18/
http://www.securityfocus.com/bid/100379
http://www.securitytracker.com/id/1039124
1479207 https://bugzilla.redhat.com/show_bug.cgi?id=1479207
ASA-201708-3 https://security.archlinux.org/ASA-201708-3
AVG-375 https://security.archlinux.org/AVG-375
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:*:*:*:*:*:*:*:*
CVE-2017-7788 https://nvd.nist.gov/vuln/detail/CVE-2017-7788
mfsa2017-18 https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
USN-3391-1 https://usn.ubuntu.com/3391-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7788.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:H/Au:N/C:C/I:C/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7788
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:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7788
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 0.8326
EPSS Score 0.01918
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:44.477896+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-18.yml 38.0.0