vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2024-8386

MEDIUM
6.1
CVSS Score
Published: September 3, 2024 at 12:32 PM UTC
Updated: June 17, 2026 at 08:22 AM UTC
3 products affected across 1 vendorFirefoxFirefox ESRThunderbird

Using Firefox by Mozilla?

Get instant alerts when new vulnerabilities affect Firefox - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

If a site had been granted the permission to open popup windows, it could cause Select elements to appear on top of another site to perform a spoofing attack. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Thunderbird < 128.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox· Mozilla
95%
v < 130
Affected range stops below 130, so it looks safe — our inference, not a vendor statement
Affected range stops below 130.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 128.2
Affected range stops below 128.2, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
60%
v < 128.2
Affected range stops below 128.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

Issue TrackingPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1907032
Issue TrackingPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1909163
Issue TrackingPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1909529
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2024-39/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2024-40/
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2024-43/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-601CWE-290

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card