
CVE-2025-8035 – firefox: thunderbird: Memory safety bugs
https://notcve.org/view.php?id=CVE-2025-8035
22 Jul 2025 — Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was found in Firefox and Thunderbird. The Mozil... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1975961%2C1975961%2C1975961 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVE-2025-8040
https://notcve.org/view.php?id=CVE-2025-8040
22 Jul 2025 — Memory safety bugs present in Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1975058%2C1975058%2C1975998%2C1975998 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVE-2025-8034 – firefox: thunderbird: Memory safety bugs
https://notcve.org/view.php?id=CVE-2025-8034
22 Jul 2025 — Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was f... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1970422%2C1970422%2C1970422%2C1970422 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVE-2025-8033 – firefox: thunderbird: Incorrect JavaScript state machine for generators
https://notcve.org/view.php?id=CVE-2025-8033
22 Jul 2025 — The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: The JavaScript engine did not handle closed generators correctly, and it was possible to res... • https://bugzilla.mozilla.org/show_bug.cgi?id=1973990 • CWE-476: NULL Pointer Dereference •

CVE-2025-8039
https://notcve.org/view.php?id=CVE-2025-8039
22 Jul 2025 — In some cases search terms persisted in the URL bar even after navigating away from the search page. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1. • https://bugzilla.mozilla.org/show_bug.cgi?id=1970997 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2025-8038
https://notcve.org/view.php?id=CVE-2025-8038
22 Jul 2025 — Thunderbird ignored paths when checking the validity of navigations in a frame. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1. • https://bugzilla.mozilla.org/show_bug.cgi?id=1808979 • CWE-345: Insufficient Verification of Data Authenticity •

CVE-2025-8032 – firefox: thunderbird: XSLT documents could bypass CSP
https://notcve.org/view.php?id=CVE-2025-8032
22 Jul 2025 — XSLT document loading did not correctly propagate the source document which bypassed its CSP. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: XSLT document loading incorrectly propagates the source document which bypassed its CSP. • https://bugzilla.mozilla.org/show_bug.cgi?id=1974407 • CWE-693: Protection Mechanism Failure •

CVE-2025-8031 – firefox: thunderbird: Incorrect URL stripping in CSP reports
https://notcve.org/view.php?id=CVE-2025-8031
22 Jul 2025 — The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: The username:password
part is incorrectly stripped from URLs in CSP reports, potentially ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1971719 • CWE-276: Incorrect Default Permissions •

CVE-2025-8030 – firefox: thunderbird: Potential user-assisted code execution in “Copy as cURL” command
https://notcve.org/view.php?id=CVE-2025-8030
22 Jul 2025 — Insufficient escaping in the “Copy as cURL” feature could potentially be used to trick a user into executing unexpected code. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Insufficient escaping in the “Copy as cURL” feature could potentially be used to trick a user into executing unexpec... • https://bugzilla.mozilla.org/show_bug.cgi?id=1968414 • CWE-94: Improper Control of Generation of Code ('Code Injection') •

CVE-2025-8037
https://notcve.org/view.php?id=CVE-2025-8037
22 Jul 2025 — Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1. • https://bugzilla.mozilla.org/show_bug.cgi?id=1964767 • CWE-614: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute •