Is CVE-2023-29540 in the CISA KEV catalog?

No. CVE-2023-29540 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-29540?

CVE-2023-29540 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2023-29540?

CVE-2023-29540 has an EPSS score of 0.32% (23th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-29540?

Upgrade firefox on debian unstable to 112.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-29540

MEDIUM

6.1

CVSS v3

NVD

Description

Using a redirect embedded into sourceMappingUrls could allow for navigation to external protocol links in sandboxed iframes without allow-top-navigation-to-custom-protocols . This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

CWE-601Open Redirect

How to fix

Remediation Available

firefoxDebian

Fixed in:112.0-1CVE-2023-29540

firefoxUbuntu

Fixed in:112.0+build2-0ubuntu0.18.04.1USN-6010-1

Fixed in:112.0+build2-0ubuntu0.20.04.1USN-6010-1

DeveloperEditionWindows application

Affected:112.0Fixed in:112.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:112.0Fixed in:112.0Mozilla

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

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.32%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	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 2024-11-21.