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Thunderbird

thunderbird

Vendor: Mozilla • 1,867 CVEs

CVEs (1,867)

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1Mozilla
2Firefox
Thunderbird
Aug 21, 2026
Aug 18, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
1Mozilla
2Firefox
Thunderbird
Aug 19, 2026
Aug 18, 2026
N/A· v4
9.1 CRITICAL· v3
N/A· v2
Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
1Mozilla
2Firefox
Thunderbird
Aug 19, 2026
Aug 18, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
1Mozilla
2Firefox
Thunderbird
Aug 21, 2026
Aug 18, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
1Mozilla
2Firefox
Thunderbird
Aug 21, 2026
Aug 18, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Networking component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
1Mozilla
2Firefox
Thunderbird
Aug 24, 2026
Aug 18, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Site isolation issue in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 15...Show more
Site isolation issue in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.Show less
1Mozilla
1Thunderbird
Aug 12, 2026
Jul 22, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer for the he...Show more
The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer for the headers, and potentially crashing Thunderbird. This vulnerability was fixed in Thunderbird 153 and Thunderbird 140.13.Show less
1Mozilla
2Firefox
Thunderbird
Aug 6, 2026
Jul 21, 2026
N/A· v4
9.1 CRITICAL· v3
N/A· v2
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
1Mozilla
2Firefox
Thunderbird
Aug 10, 2026
Jul 21, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
1Mozilla
2Firefox
Thunderbird
Jul 27, 2026
Jul 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
1Mozilla
2Firefox
Thunderbird
Jul 27, 2026
Jul 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
1Mozilla
2Firefox
Thunderbird
Jul 27, 2026
Jul 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
1Mozilla
2Firefox
Thunderbird
Sep 1, 2026
Jul 21, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, Thunderbird 140.13, Firefox ESR 140.15, and Thunderbird 140.15.
1Mozilla
2Firefox
Thunderbird
Sep 1, 2026
Jul 21, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 153, Thunderbird 153, Firefox ESR 140.15, and Thunderbird 140.15.
1Mozilla
1Thunderbird
Jul 6, 2026
Jul 1, 2026
N/A· v4
6.5 MEDIUM· v3
N/A· v2
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 Thunderb...Show more
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.Show less
1Mozilla
1Thunderbird
Jul 6, 2026
Jul 1, 2026
N/A· v4
5.3 MEDIUM· v3
N/A· v2
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...Show more
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.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jun 16, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jun 16, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jun 16, 2026
N/A· v4
8.1 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox ESR 115.36, 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 effor...Show more
Memory safety bugs present in Firefox ESR 115.36, 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, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jun 16, 2026
N/A· v4
8.1 HIGH· v3
N/A· v2
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 coul...Show more
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.Show less