macOS Tahoe Release History
Comprehensive changelog, security updates, and enterprise deployment notes for the macOS 26 lifecycle. Information curated for IT administrators and power users.
Overview: The latest stable release delivering security patches, a significant Safari update (security content published May 13), and stability improvements. Recommended for all users.
- 14 WebKit CVEs: All security patches in this Safari update target WebKit (and one WebRTC). Impacts include: CSP enforcement bypass, sensitive user data disclosure, process crashes via use-after-free, and malicious iframe download-settings abuse. (CVE-2026-43660, 28907, 28962, 43658, 28905, 28847, 28904, 28955, 28903, 28953, 28902, 28901, 28913, 28883, 28958, 28917, 28947, 28946, 28942, 28971)
- Available for: macOS Sonoma and macOS Sequoia (standalone Safari update for older macOS). Safari on iOS 26.5, iPadOS 26.5, and visionOS 26.5 is included with those OS updates.
- 63 Bug Fixes: Improvements to Scroll-driven animations, Anchor Positioning, WebRTC, networking, and rendering at different zoom levels.
- CSS
:openPseudo-class: Consistent styling for the open state of<details>,<dialog>,<select>, and<input>elements. - CSS
random()Updates:element-scopedkeyword for per-element randomness; caching updated to global-by-default per spec. - SVG & Web APIs:
color-interpolationfor SVG gradients,ToggleEvent.sourcefor popovers, and the Origin API.
- System Security: Addressed multiple vulnerabilities that could lead to arbitrary code execution, including WebKit and Kernel patches.
- Stability Improvements: Resolves system instability issues and improves overall device performance.
Overview: Important security update providing crucial vulnerability patches and system enhancements recommended for all users.
- System Security: Addressed multiple vulnerabilities that could lead to arbitrary code execution (CVE fixes).
- Stability Improvements: Resolves system instability issues and improves overall device performance.
Overview: Minor update providing crucial bug fixes and enabling support for the Studio Display and Studio Display XDR.
Overview: The third major point release for macOS Tahoe focuses on window management and Safari enhancements.
- Window Management: Fixes sticky edge behavior in Stage Manager.
- Safari: Web profiles can now have distinct dock icons.
- Enterprise Config: Updates to MDM protocol for declarative device management.
Overview: Stability and performance focus for the winter cycle.
- Gaming Mode: Enhanced performance priority for game porting toolkit compatibility.
- Finder: "Smart Folders" now support regex-based filtering.
- Freeform: Infinite canvas performance improvements for large boards.
Overview: A stability-focused release addressing early bugs from the initial 26.0 launch.
Overview: The massive annual update bringing major new features and ecosystem enhancements.