Mozilla Firefox (en-US) 109.0
Mozilla Firefox (en-US) 109.0, released January 17, 2023, fixes 9 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every one of these CVEs.
Superseded. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every CVE on this page. Install that instead.
Priority of the 9 CVEs
Applies to
| Product | Version |
|---|---|
| Mozilla Firefox (en-US) | 109.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2023-23605 | Memory safety bugs fixed in Firefox 109 and Firefox ESR 102.7 | 8.8 | 0.0070 | None reported |
| High | CVE-2023-23598 | Arbitrary file read from GTK drag and drop on Linux | 8.8 | 0.0064 | None reported |
| High | CVE-2023-23603 | Calls to console.log allowed bypassing Content Security Policy via format directive | 8.8 | 0.0064 | None reported |
| High | CVE-2023-23599 | Malicious command could be hidden in devtools output on Windows | 8.8 | 0.0060 | None reported |
| High | CVE-2023-23602 | Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers | 8.8 | 0.0060 | None reported |
| High | CVE-2023-23606 | Memory safety bugs fixed in Firefox 109 | 8.8 | 0.0052 | None reported |
| High | CVE-2023-23601 | URL being dragged from cross-origin iframe into same tab triggers navigation | 8.8 | 0.0035 | None reported |
| Routine | CVE-2023-23604 | Creation of duplicate SystemPrincipal from less secure contexts | 6.5 | 0.0046 | None reported |
| Routine | CVE-2023-23597 | Logic bug in process allocation allowed to read arbitrary files | 6.5 | 0.0034 | None reported |
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