
CVE-2025-2830 – thunderbird: Information Disclosure of /tmp directory listing
https://notcve.org/view.php?id=CVE-2025-2830
15 Apr 2025 — By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2. Multiple security issues ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1956379 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2025-3522 – thunderbird: Leak of hashed Window credentials via crafted attachment URL
https://notcve.org/view.php?id=CVE-2025-3522
15 Apr 2025 — Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vuln... • https://bugzilla.mozilla.org/show_bug.cgi?id=1955372 • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') CWE-1220: Insufficient Granularity of Access Control •

CVE-2025-26695 – Gentoo Linux Security Advisory 202505-03
https://notcve.org/view.php?id=CVE-2025-26695
10 Mar 2025 — When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8. Multiple vulnerabilities have been discovered in Mozilla Thunderbird, the worst of which could lead to remote code execution. Versions greater than or equal to 128.9.0 are affected. • https://bugzilla.mozilla.org/show_bug.cgi?id=1883039 •

CVE-2025-26696 – Gentoo Linux Security Advisory 202505-03
https://notcve.org/view.php?id=CVE-2025-26696
10 Mar 2025 — Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8. Multiple vulnerabilities have been discovered in Mozilla Thunderbird, the worst of which could lead to remote code execution. Versions greater than or equal to 128.9.0 are affected. • https://bugzilla.mozilla.org/show_bug.cgi?id=1864205 • CWE-290: Authentication Bypass by Spoofing •

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 •

CVE-2025-1936 – firefox: Adding %00 and a fake extension to a jar: URL changed the interpretation of the contents
https://notcve.org/view.php?id=CVE-2025-1936
28 Feb 2025 — jar: URLs retrieve local file content packaged in a ZIP archive. The null and everything after it was ignored when retrieving the content from the archive, but the fake extension after the null was used to determine the type of content. This could have been used to hide code in a web extension disguised as something else like an image. This vulnerability affects Firefox < 136 and Firefox ESR < 128.8. jar: URLs retrieve local file content packaged in a ZIP archive. The null and everything after it was ignore... • https://bugzilla.mozilla.org/show_bug.cgi?id=1940027 • CWE-158: Improper Neutralization of Null Byte or NUL Character CWE-754: Improper Check for Unusual or Exceptional Conditions •

CVE-2025-1937 – firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8
https://notcve.org/view.php?id=CVE-2025-1937
28 Feb 2025 — Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. 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 < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8. Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. Some of these bugs sh... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938471%2C1940716 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-1260: Improper Handling of Overlap Between Protected Memory Ranges •