Is CVE-2022-31738 in the CISA KEV catalog?

No. CVE-2022-31738 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-31738?

CVE-2022-31738 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-31738?

CVE-2022-31738 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-31738?

Upgrade firefox on debian unstable to 101.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2022-31738

MEDIUM

6.5

CVSS v3

NVD

Description

When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

CWE-290

How to fix

Remediation Available

firefoxDebian

Fixed in:101.0-1CVE-2022-31738

firefoxUbuntu

Fixed in:101.0.1+build1-0ubuntu0.18.04.1USN-5475-1

Fixed in:101.0.1+build1-0ubuntu0.20.04.1USN-5475-1

thunderbirdUbuntu

Fixed in:1:91.11.0+build2-0ubuntu0.18.04.1USN-5512-1

Fixed in:1:91.11.0+build2-0ubuntu0.20.04.1USN-5512-1

Fixed in:1:91.11.0+build2-0ubuntu0.22.04.1USN-5512-1

DeveloperEditionWindows application

Affected:101Fixed in:101Mozilla

Mozilla Firefox (en-US)Windows application

Affected:101Fixed in:101Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:91.10Fixed in:91.10Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:91.10Fixed in:91.10Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Vendor Advisory4

Related Vulnerabilities

Other CWE-290 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-4358	Critical	9.8	97%	KEV	-
CVE-2022-24112	Critical	9.8	96%	KEV	Fix
CVE-2022-23131	Critical	9.1	96%	KEV	-
CVE-2021-29441	High	8.6	74%	-	Fix
CVE-2021-31195	Medium	6.5	74%	-	Fix
CVE-2020-7388	Critical	10.0	70%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-16.