7.5

CVE-2018-11712: webkitgtk Improper Certificate Validation

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-11712DEBIAN-CVE-2018-11712
Published 04-06-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-11712 is a high (CVSS 7.5) Improper Certificate Validation vulnerability in webkitgtk. EPSS estimates a 1.16% chance of exploitation in the next 30 days, higher than 66.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.16%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
RHSA-2018:3140SUSE-SU-2018:3387-1

Timeline

  1. 04-06-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp in the libsoup network backend of WebKit, as used in WebKitGTK+ versions 2.20.0 and 2.20.1, failed to perform TLS certificate verification for WebSocket connections.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.16%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

-0.02 pp

From 1.18% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu4 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtk< 2.20.2-0ubuntu0.16.04.1 | < 2.20.2-0ubuntu0.18.04.1
  • webkitgtkAll versions (No fix recorded)
Debian1 product
  • webkit2gtk< 2.20.2-1
Webkitgtk1 product

3 vendors · 6 products

References

7 links