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CVE-2026-0818

CVE

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
February 5, 2026
Last Seen
February 5, 2026
API
Exploited in Wild
—
Ransomware Use
—
Public Exploits
—
Attack Vector
—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Mozilla Thunderbird CSS Exfiltration Vulnerability Patched37.2

A vulnerability identified as CVE-2026-0818 affects Mozilla Thunderbird, allowing CSS-based exfiltration of content from partially encrypted emails when remote content is enabled. This issue has been addressed in the latest update to version 140.7.1. Affected users are advised to apply the patch usi...

Public Exploits

Checking GitHub for proof-of-concept code…

CVE Details

Related Entities

Data BreachUbuntuT1567 - Exfiltration Over Web ServiceT1041 - Exfiltration Over C2 ChannelOpenSUSE Leap 15.6SUSE Linux Enterprise Workstation Extension 15 SP7SUSE Linux Enterprise Desktop 15 SP7SUSE Linux Enterprise Real Time 15 SP7SUSE Linux Enterprise Server 15 SP7SUSE Linux Enterprise Server For SAP Applications 15 SP7SUSE Package Hub 15 15-sp7Mozilla Thunderbird