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Vulnerability details: VCID-qbwp-cmtb-1kc4
Vulnerability ID VCID-qbwp-cmtb-1kc4
Aliases CVE-2019-8375
Summary The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products, does not prevent the script dialog size from exceeding the web view size, which allows remote attackers to cause a denial of service (Buffer Overflow) or possibly have unspecified other impact, related to UIProcess/API/gtk/WebKitScriptDialogGtk.cpp, UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and UIProcess/API/gtk/WebKitWebViewGtk.cpp, as demonstrated by GNOME Web (aka Epiphany).
Status Published
Exploitability 2.0
Weighted Severity 8.8
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
epss 0.19285 https://api.first.org/data/v1/epss?cve=CVE-2019-8375
cvssv3 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-8375
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-8375
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.html
https://api.first.org/data/v1/epss?cve=CVE-2019-8375
https://bugs.webkit.org/show_bug.cgi?id=184875
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8375
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531
https://trac.webkit.org/changeset/241515/webkit
https://www.exploit-db.com/exploits/46465/
https://www.inputzero.io/2019/02/fuzzing-webkit.html
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:*
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:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
CVE-2019-8375 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/46465.txt
CVE-2019-8375 https://nvd.nist.gov/vuln/detail/CVE-2019-8375
USN-3948-1 https://usn.ubuntu.com/3948-1/
Data source Exploit-DB
Date added Feb. 28, 2019
Description WebKitGTK 2.23.90 / WebKitGTK+ 2.22.6 - Denial of Service
Ransomware campaign use Unknown
Source publication date Feb. 28, 2019
Exploit type dos
Platform linux
Source update date Feb. 28, 2019
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H 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-2019-8375
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-2019-8375
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 0.9533
EPSS Score 0.19285
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:55.312711+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0