CVE-2026-2798 - Vulnerability Details - OpenCVE

Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

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References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2014136
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-16/

History

Tue, 24 Feb 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 24 Feb 2026 19:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-416
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}`

Tue, 24 Feb 2026 18:00:00 +0000

Type	Values Removed	Values Added
Description	Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148.	Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
References		https://www.mozilla.org/security/advisories/mfsa2026-16/

Tue, 24 Feb 2026 14:00:00 +0000

Type	Values Removed	Values Added
Description		Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148.
Title		Use-after-free in the DOM: Core & HTML component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2014136 https://www.mozilla.org/security/advisories/mfsa2026-13/

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-02-24T13:33:28.034Z

Updated: 2026-02-24T18:25:31.688Z

Reserved: 2026-02-19T15:06:47.628Z

Link: CVE-2026-2798

Vulnrichment

Updated: 2026-02-24T18:25:14.256Z

NVD

Status : Received

Published: 2026-02-24T14:16:28.307

Modified: 2026-02-24T19:21:44.180

Link: CVE-2026-2798

Redhat

No data.

OpenCVE Enrichment

No data.

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