CVE-2024-9398

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-9398
StatePUBLISHED
Assignermozilla
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-10-01 16:15:10 UTC
Updated2026-10-08 15:37:15 UTC
DescriptionBy checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

EPSS: 0.005660000 probability, percentile 0.452190000 (date 2026-10-08)

Problem Types: NVD-CWE-noinfo | CWE-203 | External protocol handlers could be enumerated via popups | CWE-203 CWE-203 Observable Discrepancy

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1ADPDECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mozilla Firefox All All All All
Application Mozilla Firefox All All All All
Application Mozilla Thunderbird All All All All
Application Mozilla Thunderbird 129.0 beta All All
Application Mozilla Thunderbird 129.0 beta2 All All
Application Mozilla Thunderbird 129.0 beta3 All All
Application Mozilla Thunderbird 129.0 beta4 All All
Application Mozilla Thunderbird 129.0 beta5 All All
Application Mozilla Thunderbird 129.0 beta6 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mozilla Firefox affected unspecified 131 custom Not specified
CNA Mozilla Firefox ESR affected unspecified 128.3 custom Not specified
CNA Mozilla Thunderbird affected unspecified 128.3 custom Not specified
CNA Mozilla Thunderbird affected unspecified 131 custom Not specified

References

ReferenceSourceLinkTags
www.mozilla.org/security/advisories/mfsa2024-50 [email protected] www.mozilla.org Vendor Advisory
www.mozilla.org/security/advisories/mfsa2024-49 [email protected] www.mozilla.org Vendor Advisory
www.mozilla.org/security/advisories/mfsa2024-47 [email protected] www.mozilla.org Vendor Advisory
www.mozilla.org/security/advisories/mfsa2024-46 [email protected] www.mozilla.org Vendor Advisory
bugzilla.mozilla.org/show_bug.cgi [email protected] bugzilla.mozilla.org Issue Tracking, Permissions Required
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Satoki Tsuji (en)

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