Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Filtered by product Firefox Esr
Total 490 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2022-40960 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-40959 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-40958 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-40957 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.5 MEDIUM
Inconsistent data in instruction and data cache when creating wasm code could lead to a potentially exploitable crash.<br>*This bug only affects Firefox on ARM64 platforms.*. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-40956 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 6.1 MEDIUM
When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-3266 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 5.5 MEDIUM
An out-of-bounds read can occur when decoding H264 video. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVE-2022-38478 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Members the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103, Firefox ESR 102.1, and Firefox ESR 91.12. 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 affects Thunderbird < 102.2, Thunderbird < 91.13, Firefox ESR < 91.13, Firefox ESR < 102.2, and Firefox < 104.
CVE-2022-38477 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
Mozilla developer Nika Layzell and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103 and Firefox ESR 102.1. 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 affects Firefox ESR < 102.2, Thunderbird < 102.2, and Firefox < 104.
CVE-2022-38476 1 Mozilla 2 Firefox Esr, Thunderbird 2026-06-17 N/A 7.5 HIGH
A data race could occur in the <code>PK11_ChangePW</code> function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR < 102.2 and Thunderbird < 102.2.
CVE-2022-38473 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
A cross-origin iframe referencing an XSLT document would inherit the parent domain's permissions (such as microphone or camera access). This vulnerability affects Thunderbird < 102.2, Thunderbird < 91.13, Firefox ESR < 91.13, Firefox ESR < 102.2, and Firefox < 104.
CVE-2022-36319 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 7.5 HIGH
When combining CSS properties for overflow and transform, the mouse cursor could interact with different coordinates than displayed. This vulnerability affects Firefox ESR < 102.1, Firefox ESR < 91.12, Firefox < 103, Thunderbird < 102.1, and Thunderbird < 91.12.
CVE-2022-36318 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 5.3 MEDIUM
When visiting directory listings for `chrome://` URLs as source text, some parameters were reflected. This vulnerability affects Firefox ESR < 102.1, Firefox ESR < 91.12, Firefox < 103, Thunderbird < 102.1, and Thunderbird < 91.12.
CVE-2022-36314 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 5.5 MEDIUM
When opening a Windows shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system.<br>This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 102.1, Firefox < 103, and Thunderbird < 102.1.
CVE-2022-34484 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. 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 affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34481 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
In the <code>nsTArray_Impl::ReplaceElementsAt()</code> function, an integer overflow could have occurred when the number of elements to replace was too large for the container. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34479 2 Linux, Mozilla 4 Linux Kernel, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 6.5 MEDIUM
A malicious website that could create a popup could have resized the popup to overlay the address bar with its own content, resulting in potential user confusion or spoofing attacks. <br>*This bug only affects Thunderbird for Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34478 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2026-06-17 N/A 6.5 MEDIUM
The <code>ms-msdt</code>, <code>search</code>, and <code>search-ms</code> protocols deliver content to Microsoft applications, bypassing the browser, when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild (although we know of none exploited through Thunderbird), so in this release Thunderbird has blocked these protocols from prompting the user to open them.<br>*This bug only affects Thunderbird on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34472 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 4.3 MEDIUM
If there was a PAC URL set and the server that hosts the PAC was not reachable, OCSP requests would have been blocked, resulting in incorrect error pages being shown. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34470 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 9.8 CRITICAL
Session history navigations may have led to a use-after-free and potentially exploitable crash. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVE-2022-34468 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2026-06-17 N/A 8.8 HIGH
An iframe that was not permitted to run scripts could do so if the user clicked on a <code>javascript:</code> link. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.