CVE-2018-11713 Information disclosure in n/a
Attackers can deanonymize users via crafted websites because WebKitGTK+ failed to use system proxy settings for WebSocket connections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-11713?
CVE-2018-11713 is a medium-severity vulnerability in Webkitgtk Webkitgtk\+, published on 4 Jun 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp in the libsoup network backend of WebKit, as used in WebKitGTK+ prior to version 2.20.0 or without libsoup 2.62.0, unexpectedly failed to use system proxy settings for WebSocket connections. As a result, users could be deanonymized by crafted web sites via a WebSocket connection.
Which versions are affected by CVE-2018-11713?
It affects 2 products.
Products include Gnome Libsoup, Webkitgtk Webkitgtk\+.
How do I fix CVE-2018-11713?
Upgrade to a fixed version.
Is CVE-2018-11713 being exploited?
There is no known exploitation of CVE-2018-11713 in the wild and no public exploit code.
Other vulnerabilities in Webkitgtk Webkitgtk\+
- CVE-2026-102556 Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
- CVE-2026-102557 Libsoup: libsoup: heap buffer overflow during websocket message reassembly
- CVE-2026-102558 Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth
- CVE-2026-102559 Libsoup: libsoup: heap buffer overflow during websocket client-frame masking
- CVE-2026-102560 Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth
Sources
Also known as DEBIAN-CVE-2018-11713, GHSA-q6g9-cxvx-7pq9, UBUNTU-CVE-2018-11713.