CVE-2019-8375
highpriority · attend · 54EPSS 0.157 · 97 %ileexploit · PoCEURUUSEPSS · scored 2026-10-27
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).
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (26)
Products and version ranges known to be affected.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (32)
External citations — patches, advisories, analysis.
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00058.htmlcnnvd
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00005.htmlcnnvd
- https://bugs.webkit.org/show_bug.cgi?id=184875cnnvd
- https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-8375cnnvd
- https://trac.webkit.org/changeset/241515/webkitcnnvd
- https://usn.ubuntu.com/3948-1/cnnvd
- https://vigilance.fr/vulnerability/WebKitGTK-buffer-overflow-via-UIProcess-28952cnnvd
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