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CVE-2024-9398
By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application…
Medium5.3EPSS 0.57%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
By 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.57% · top 53% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
- External protocol handlers could be enumerated via popups
- CWE-203 Observable Discrepancy (opens in a new tab)All about CWE-203 and its CVEs
Affected products
- affected unspecified – < 131
- affected unspecified – < 128.3
- affected unspecified – < 128.3
- affected unspecified – < 131
References (5)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1881037 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2024-46/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2024-47/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2024-49/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2024-50/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-9398)Record last updated .