Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3663 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-57962 1 Mozilla 1 Thunderbird 2026-07-06 N/A 5.3 MEDIUM
A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
CVE-2026-57963 1 Mozilla 1 Thunderbird 2026-07-06 N/A 6.5 MEDIUM
An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
CVE-2026-45173 4 Google, Microsoft, Mozilla and 1 more 4 Chrome, Edge Chromium, Firefox and 1 more 2026-06-22 N/A 6.5 MEDIUM
Idira Identity Browser Extension (Chrome, Firefox, and Edge builds) versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote attacker to trigger unauthorized application interaction or execution parameters within the context of that authenticated browser session. CyberArk Security Bulletin: CA26-21
CVE-2026-12317 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 7.5 HIGH
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVE-2026-12314 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 7.5 HIGH
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12312 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 7.5 HIGH
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12310 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 7.5 HIGH
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12309 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 6.5 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12308 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 5.3 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12307 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 5.3 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12306 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 5.3 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12305 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 7.5 HIGH
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12301 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 5.3 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVE-2026-12300 1 Mozilla 2 Firefox, Thunderbird 2026-06-18 N/A 5.3 MEDIUM
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVE-2026-11799 1 Mozilla 2 Focus, Klar 2026-06-17 N/A 7.5 HIGH
UXSS in Focus for iOS / Klar Webkit navigation. This vulnerability was fixed in Focus for iOS 151.3.1 and Klar for iOS 151.3.1.
CVE-2026-12325 1 Mozilla 2 Firefox, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-53899 1 Mozilla 1 Firefox Mobile 2026-06-17 N/A 6.5 MEDIUM
Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.
CVE-2026-53900 1 Mozilla 1 Firefox Mobile 2026-06-17 N/A 4.3 MEDIUM
Firefox for iOS preserved cookies set on the initial PDF request across cross-origin HTTP redirects in TemporaryDocument, allowing a malicious site to inject arbitrary cookies into requests to an unrelated target domain. This vulnerability was fixed in Firefox for iOS 152.0.
CVE-2026-12316 1 Mozilla 2 Firefox, Thunderbird 2026-06-17 N/A 9.1 CRITICAL
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVE-2026-12327 1 Mozilla 2 Firefox, Thunderbird 2026-06-17 N/A 8.1 HIGH
Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.