CVE-2026-6770
IndexedDB Vulnerability in Firefox 150 Allows Data Corruption
Publication date: 2026-04-21
Last updated on: 2026-04-22
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 150.0 (exc) |
| mozilla | firefox | to 140.10.0 (exc) |
| mozilla | thunderbird | to 140.10.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-200 | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
This vulnerability in the Storage: IndexedDB component of Firefox could lead to a low impact on confidentiality and availability, as indicated by the CVSS score. An attacker could potentially exploit this issue remotely without user interaction, causing limited data disclosure and partial disruption of service.
Can you explain this vulnerability to me?
This vulnerability is an issue in the Storage: IndexedDB component of Mozilla Firefox. It was addressed and fixed in Firefox version 150 and Firefox ESR 140.10.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Firefox browser to version 150 or later, or Firefox ESR to version 140.10 or later, where the issue has been fixed.