CVE-2026-109776

MediumCVSS 4.2/10Last modified Oct 15, 2026

Description

Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Metrics

CVSS 3.1 4.2/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-362

Affected software

No affected versions have been published.

Timeline

Published
Oct 13, 2026
Last modified
Oct 15, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-1097774.3Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158,CVE-2026-1097788.8Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and ThCVE-2026-1097794.2Race condition in the Networking: DNS component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.CVE-2026-109788.8Use after free in Chromoting in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via maliCVE-2026-109780Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.CVE-2026-1097816.5Denial-of-service in the Printing: Output component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and ThCVE-2026-109782Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5.CVE-2026-109783Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5.CVE-2026-1097865.3In fail2ban 0.10.5 through 1.1.1 before ddd879d, the sshd filter (config/filter.d/sshd.conf) accepts an "on <token>" suffix after the host aCVE-2026-109796.5Out of bounds read in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information frCVE-2026-10986.4The CM CSS Columns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tag' shortcode attribute in all versions up toCVE-2026-109806.5Insufficient validation of untrusted input in DevTools in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised
CVE-2026-109776: Medium severity, CVSS 4.2 | Vulnix