CVE-2023-29540

MEDIUM

6.1

CVSS Score

Published: June 2, 2023 at 12:00 AM UTC

Updated: August 19, 2026 at 03:29 PM UTC

3 products affected across 1 vendorFirefoxFirefox MobileFocus

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 112v < 112.0

Affected range stops below 112, so it looks safe — our inference, not a vendor statement

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Firefox Mobile · Mozilla

95%

v < 112.0

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Focus · Mozilla

95%

v < 112v < 112.0

Affected range stops below 112, so it looks safe — our inference, not a vendor statement

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Issue TrackingPermissions RequiredVendor Advisory

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1790542

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-13/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-601

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