Use-After-Free in Firefox by Mozilla
CVE-2026-2795

8.8HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
24 February 2026

What is CVE-2026-2795?

A use-after-free vulnerability has been identified in the JavaScript: GC component of Mozilla Firefox. This issue occurs when an object is accessed after it has been deleted, leading to potential exploitation by attackers. Affected versions include Firefox versions earlier than 148, which may allow malicious web content to execute arbitrary code in the context of the user’s browser. It is critical for users to update to the latest version to mitigate this risk and enhance overall web security.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

Firefox < 148

Thunderbird < 148

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2010940
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-16/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

x0e
JSON
.