CVE-2026-6770
published 2026-04-21CVE-2026-6770: Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
PriorityP341medium6.5CVSS 3.1
AVNACLPRNUINSUCLINAL
EPSS
4.94%
91.2th percentile
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 150 | Firefox 150 |
| mozilla | firefox | < 140.10.0 | 140.10.0 |
| mozilla | firefox | < 150.0 | 150.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < Firefox ESR 140.10 | Firefox ESR 140.10 |
| mozilla | thunderbird | < Thunderbird 140.10 | Thunderbird 140.10 |
| mozilla | thunderbird | < Thunderbird 150 | Thunderbird 150 |
| mozilla | thunderbird | < 140.10.0 | 140.10.0 |
| rhel10 | firefox-flatpak | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
vendor_redhat6.5MEDIUM
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VulDB
Mozilla Firefox up to 149 IndexedDB Remote Code Execution (Nessus ID 310350)
vuldb·2026-04-26·CVSS 6.5
CVE-2026-6770 [MEDIUM] Mozilla Firefox up to 149 IndexedDB Remote Code Execution (Nessus ID 310350)
A vulnerability classified as critical has been found in Mozilla Firefox up to 149. Affected by this issue is some unknown functionality of the component IndexedDB. The manipulation leads to Remote Code Execution.
This vulnerability is traded as CVE-2026-6770. It is possible to initiate the attack remotely. There is no exploit available.
It is recommended to upgrade the affected component.
GHSA
GHSA-rx3r-9q8p-8rrj: Other issue in the Storage: IndexedDB component
ghsa_unreviewed·2026-04-21
CVE-2026-6770 [MEDIUM] CWE-200 GHSA-rx3r-9q8p-8rrj: Other issue in the Storage: IndexedDB component
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
Red Hat
firefox: Other issue in the Storage: IndexedDB component
vendor_redhat·2026-04-21·CVSS 6.5
CVE-2026-6770 [MEDIUM] CWE-440 firefox: Other issue in the Storage: IndexedDB component
firefox: Other issue in the Storage: IndexedDB component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Other issue in the Storage: IndexedDB component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: firefox (Red Hat Enterprise Linux 7) - Affected
Package: firefox (Red Hat Enterprise Linux 8) - Affected
Package: firefox (Red Hat Enterprise Linux 9) - Affected
Mozilla
Mozilla Foundation Security Advisory 2026-34: CVE-2026-6770
vendor_mozilla·CVSS 6.5
CVE-2026-6770 [MEDIUM] Mozilla Foundation Security Advisory 2026-34: CVE-2026-6770
Mozilla Foundation Security Advisory 2026-34
CVE: CVE-2026-6770
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.10
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6770
vendor_mozilla·CVSS 6.5
CVE-2026-6770 [MEDIUM] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6770
Mozilla Foundation Security Advisory 2026-30
CVE: CVE-2026-6770
Product: Firefox
Impact: high
Fixed in: Firefox 150
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6770
vendor_mozilla·CVSS 6.5
CVE-2026-6770 [MEDIUM] Mozilla Foundation Security Advisory 2026-33: CVE-2026-6770
Mozilla Foundation Security Advisory 2026-33
CVE: CVE-2026-6770
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 150
Mozilla
Mozilla Foundation Security Advisory 2026-32: CVE-2026-6770
vendor_mozilla·CVSS 6.5
CVE-2026-6770 [MEDIUM] Mozilla Foundation Security Advisory 2026-32: CVE-2026-6770
Mozilla Foundation Security Advisory 2026-32
CVE: CVE-2026-6770
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.10
No detection rules found.
No public exploits indexed.
Hackernews
⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
blogs_hackernews·2026-05-04·CVSS 9.3
CVE-2026-41940 [CRITICAL] ⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
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## ⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
This week, the shadows moved faster than the patches.
While most teams were still triaging last month’s alerts, attackers had already turned control panels into kill switches, kernels into open doors, and open-source pipelines into silent delivery systems.
The game has shifted from breach to occupation. They’re living inside SaaS sessions, pushing code with trusted commits, and scaling operations like legitimate businesses — except their product is chaos. And the underground is getting uncomfortably professional.
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Bugzilla
CVE-2026-6770 firefox: Other issue in the Storage: IndexedDB component
bugzilla·2026-04-21·CVSS 6.5
CVE-2026-6770 [MEDIUM] CVE-2026-6770 firefox: Other issue in the Storage: IndexedDB component
CVE-2026-6770 firefox: Other issue in the Storage: IndexedDB component
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
2026-04-21
Published