Release notes
These release notes are summaries of the most important changes for public releases.
Published 2025-06-13
This is a bugfix and security release.
- Fixed an issue where the Basilisk preferences would fail to open if the browser is compiled with
--disable-webrtc.
- Fixed a crash dealing with
BigInt in
Javascript compilation.
- Updated NSS to 3.90.7 to pick up a security fix.
- Updated devtools to escape some more characters in "Copy as
cURL" on POSIX operating systems. DiD
- Addressed PWN2OWN-2025-1 (out of bounds read or write in
promise)
DiD
- Addressed PWN2OWN-2025-2 (out of bounds read or write when
using the
ExtractLinearSum optimization) DiD
- Fixed potential unexpected behavior in embedded protobuf
code. DiD
- Fixed an issue with potentially uninitialized contrast
values when enhanced device contrast values can not be read from the
OS. DiD
- Fixed potential sanitization issues with devtools' "Copy as
curl" feature. DiD
- Built on UXP commit: 15335ce39d
Published 2025-04-23
This is a development, bugfix, stability, and security release.
- Implemented CSS two-location color stop logic. This allows
for two-location color stops (`
color x% y%`) in gradients,
which is shorthand for `color x%, color y%` where both
colors are equal.
- Our minimum GCC version requirement to build is now 9.1.
- Improved channel handling when CSP blocks network redirects.
- Implemented several fixes for CORS preflight requests.
- Added explicit whitelisting from CSP content loading of
javascript:
scheme URLs.
- Updated the ffvpx library to 6.0.1, this time preventing
video color range regressions. An update to 6.0 was previously backed
out in v2025.01.04.
- Updated the JPEG-XL library to 0.11.1 to pick up several
fixes and improve decoding compatibility of jxl files.
- Updated the SQLite library to 3.49.1.
- Fixed a spec compliance issue with DOMRect and DOMQuad
returning 0 if NaN was present. We now return NaN in that case, per
spec.
- Fixed a spec compliance issue with NTLM authentication. We
now compute Channel Binding Hashes using the certificate signature's
hash algorithm, per spec.
Note that particularly weak algorithms are not used and SHA256 will be
used as a minimum, instead, in those cases.
- Fixed a buildability issue on Mac with XCode 16.3.
- Added some additional safety checking to
SharedArrayBuffers.
- Added some additional safety checking to XSLT compilation
and transformation.
- Windows only: Added a preference
widget.windows.follow_shortcuts_on_file_open
to control how Windows File Open dialogs handle shortcut links. See
implementation notes.
- Simplified some WASM code generation in the Ion JIT
compiler.
- Fixed a crash in loading external resource maps.
- Disabled potentially unsafe attempts at recovering JIT
operations.
- Fixed some minor linking issues in about:rights.
- Updated the embedded emoji font to fix incorrect display of
some of the wheelchair emoji.
- Built on UXP commit: d892468fd0
- Security issues addressed: CVE-2025-1934 (DiD), CVE-2025-3028 (DiD), and and CVE-2025-3033 (see
implementation notes)..
Implementation notes
- Windows only:
This version introduces a new (numeric) preference to control how the
"Open File" dialogs handle shortcut links in the file system.
A low-severity security issue (CVE-2025-3033) was found that in some specific circumstances could
allow a malicious actor to convince a user to upload an unintended file
from their file system with a specially-crafted shortcut file. To
mitigate this, a special flag can be passed to File Open dialogs which
prevent the dialogs from parsing shortcut links and navigating to
target files and folders based on the shortcut file contents. This can
be controlled with the newly-added preference. Since this flag, when
set, also prevents users from navigating "through" shortcuts to folders
(from e.g. the desktop) and would instead open/attach/upload the
shortcut file itself, this would be disruptive to many users'
workflows. Considering the major usability drawback and the
low-severity nature of the security issue (which would require considerable social engineering to
pull off), Basilisk, at least for the time being or until a better
solution is found, will continue allowing the following of shortcuts
and navigating through them to target folders and files in File Open
dialogs. If you are overly cautious, you may want to set this
preference to the value 0 which always prevents shortcut
parsing and following. For everyone else, just a warning to please stay
safe and never follow strange sequences of instructions from strangers
that you don't exactly know what they do (and never take their
explanations at face value).
Old Releases
Old release notes from Basilisk Development Team releases can be found here.
Releases notes from releases by Moonchild Productions can be found here.
