
CVE-2025-6430 – firefox: thunderbird: Content-Disposition header ignored when a file is included in an embed or object tag
https://notcve.org/view.php?id=CVE-2025-6430
24 Jun 2025 — When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `<embed>` or `<object>` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability affects Firefox < 140 and Firefox ESR < 128.12. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: When a file download is specified via the Content-Disposition header, that d... • https://bugzilla.mozilla.org/show_bug.cgi?id=1971140 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2025-6429 – firefox: thunderbird: Incorrect parsing of URLs could have allowed embedding of youtube.com
https://notcve.org/view.php?id=CVE-2025-6429
24 Jun 2025 — Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability affects Firefox < 140 and Firefox ESR < 128.12. A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com d... • https://bugzilla.mozilla.org/show_bug.cgi?id=1970658 • CWE-116: Improper Encoding or Escaping of Output CWE-706: Use of Incorrectly-Resolved Name or Reference •

CVE-2025-6425 – firefox: thunderbird: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID
https://notcve.org/view.php?id=CVE-2025-6425
24 Jun 2025 — An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability affects Firefox < 140, Firefox ESR < 115.25, and Firefox ESR < 128.12. An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1717672 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2025-5263 – firefox: thunderbird: Error handling for script execution was incorrectly isolated from web content
https://notcve.org/view.php?id=CVE-2025-5263
27 May 2025 — Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1960745 • CWE-346: Origin Validation Error CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVE-2025-24213 – webkitgtk: A type confusion issue could lead to memory corruption
https://notcve.org/view.php?id=CVE-2025-24213
31 Mar 2025 — This issue was addressed with improved handling of floats. This issue is fixed in tvOS 18.4, Safari 18.4, iPadOS 17.7.6, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4. A type confusion issue could lead to memory corruption. This issue was addressed with improved handling of floats. This issue is fixed in tvOS 18.5, Safari 18.5, iPadOS 17.7.7, iOS 18.5 and iPadOS 18.5, macOS Sequoia 15.5, watchOS 11.5, visionOS 2.5. • https://support.apple.com/en-us/122371 • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •

CVE-2025-24201 – Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
https://notcve.org/view.php?id=CVE-2025-24201
11 Mar 2025 — An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in visionOS 2.3.2, iOS 18.3.2 and iPadOS 18.3.2, macOS Sequoia 15.3.2, Safari 18.3.1. Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions o... • https://packetstorm.news/files/id/200957 • CWE-787: Out-of-bounds Write •

CVE-2025-1931 – firefox: Use-after-free in WebTransportChild
https://notcve.org/view.php?id=CVE-2025-1931
28 Feb 2025 — It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8. It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8. Multip... • https://bugzilla.mozilla.org/show_bug.cgi?id=1944126 • CWE-416: Use After Free •

CVE-2025-1933 – firefox: JIT corruption of WASM i32 return values on 64-bit CPUs
https://notcve.org/view.php?id=CVE-2025-1933
28 Feb 2025 — On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8. On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. • https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •

CVE-2025-1934 – firefox: Unexpected GC during RegExp bailout processing
https://notcve.org/view.php?id=CVE-2025-1934
28 Feb 2025 — It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability affects Firefox < 136 and Firefox ESR < 128.8. It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbir... • https://bugzilla.mozilla.org/show_bug.cgi?id=1942881 • CWE-460: Improper Cleanup on Thrown Exception •

CVE-2025-1935 – firefox: Clickjacking the registerProtocolHandler info-bar Reporter
https://notcve.org/view.php?id=CVE-2025-1935
28 Feb 2025 — A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136 and Firefox ESR < 128.8. A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8. Multiple security issues were discovered in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1866661 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-1021: Improper Restriction of Rendered UI Layers or Frames •