How severe is CVE-2018-11396?

CVE-2018-11396 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-11396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11396?

CVE-2018-11396 affects Gnome Epiphany. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11396?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-11396 published?

CVE-2018-11396 was published on 2018-05-23 and last updated on 2026-06-17.

CVE-2018-11396

CVE-2018-11396 is a high-severity vulnerability in Gnome Epiphany with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnome Epiphany
Published: 2018-05-23
Last modified: 2026-06-17

Description

ephy-session.c in libephymain.so in GNOME Web (aka Epiphany) through 3.28.2.1 allows remote attackers to cause a denial of service (application crash) via JavaScript code that triggers access to a NULL URL, as demonstrated by a crafted window.open call.

Frequently asked questions

What is CVE-2018-11396?: ephy-session.c in libephymain.so in GNOME Web (aka Epiphany) through 3.28.2.1 allows remote attackers to cause a denial of service (application crash) via JavaScript code that triggers access to a NULL URL, as demonstrated by a crafted window.open call.
How severe is CVE-2018-11396?: CVE-2018-11396 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-11396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11396?: CVE-2018-11396 affects Gnome Epiphany. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11396?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-11396 published?: CVE-2018-11396 was published on 2018-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnome:epiphany:*:*:*:*:*:*:*:*

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