Firefox Developer Edition (en-US) 126.0
Firefox Developer Edition (en-US) 126.0, released April 16, 2024, fixes 17 CVEs in Firefox Developer Edition (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every one of these CVEs.
Superseded. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every CVE on this page. Install that instead.
Priority of the 17 CVEs
Applies to
| Product | Version |
|---|---|
| Firefox Developer Edition (en-US) | 126.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2024-4367 | Mozilla Firefox ESR and 6 others: Improper Check for Unusual or Exceptional Conditions | 8.8 | 0.7066 | None reported |
| High | CVE-2024-4770 | Mozilla Firefox ESR and 6 others: Use After Free | 8.8 | 0.0059 | None reported |
| High | CVE-2024-4764 | Mozilla Firefox ESR and 4 others: Use After Free | 9.8 | 0.0057 | None reported |
| High | CVE-2024-4773 | Mozilla Firefox ESR and 4 others: URL Redirection to Untrusted Site ('Open Redirect') | 7.5 | 0.0054 | None reported |
| High | CVE-2024-6604 | Memory safety bugs fixed in Firefox 128, Firefox ESR 115.13, Thunderbird 128, and Thunderbird 115.13 | 7.5 | 0.0054 | None reported |
| High | CVE-2024-4777 | Mozilla Firefox ESR and 6 others: Use After Free | 8.8 | 0.0054 | None reported |
| High | CVE-2024-4771 | Mozilla Firefox ESR and 4 others: Use After Free | 8.6 | 0.0052 | None reported |
| High | CVE-2024-4778 | Mozilla Firefox ESR and 4 others: Improper Handling of Overlap Between Protected Memory Ranges | 9.8 | 0.0044 | None reported |
| High | CVE-2024-4776 | Mozilla Firefox ESR and 4 others: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 8.2 | 0.0042 | None reported |
| High | CVE-2024-4765 | Mozilla Firefox ESR and 4 others: Use of a Broken or Risky Cryptographic Algorithm | 8.1 | 0.0027 | None reported |
| Routine | CVE-2024-4768 | Mozilla Firefox ESR and 6 others: Improper Preservation of Permissions | 6.1 | 0.0054 | None reported |
| Routine | CVE-2024-4767 | Mozilla Firefox ESR and 6 others: Exposure of Private Personal Information to an Unauthorized Actor | 6.1 | 0.0049 | None reported |
| Routine | CVE-2024-10941 | Mozilla Firefox ESR and 4 others: Improper Neutralization of Invalid Characters in Identifiers in Web Pages | 6.5 | 0.0043 | None reported |
| Routine | CVE-2024-4774 | Mozilla Firefox ESR and 4 others: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior | 6.5 | 0.0037 | None reported |
| Routine | CVE-2024-4769 | Mozilla Firefox ESR and 6 others: Insufficient Type Distinction | 6.1 | 0.0037 | None reported |
| Routine | CVE-2024-4775 | Mozilla Firefox ESR and 4 others: Missing Handler | 5.9 | 0.0022 | None reported |
| Routine | CVE-2024-4772 | Mozilla Firefox ESR and 4 others: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) | 5.9 | 0.0022 | None reported |
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