Sourced from postcss's releases.

8.5.18

• Restricted loading previous source maps file to the opts.from folder for security reasons (use unsafeMap: true to disable the check).

8.5.17

• Fixed Maximum call stack size exceeded error.
• Fixed Prototype hijacking for postcss.fromJSON().
• Fixed Input#origin() for unmapped end position (by @​chatman-media).

8.5.16

• Fixed Input#origin() position (by @​mizdra).
• Fixed raws after rehydrating a JSON AST (by @​sarathfrancis90).
• Fixed putting parent-less node in nodes of new node (by @​MahinAnowar).
• Fixed computing offset in positionBy() (by @​greymoth-jp).
• Fixed rangeBy() on index: 0 (by @​sarathfrancis90).

Sourced from postcss's changelog.

8.5.18

• Restricted loading previous source maps file to the opts.from folder for security reasons (use unsafeMap: true to disable the check).

8.5.17

• Fixed Maximum call stack size exceeded error.
• Fixed Prototype hijacking for postcss.fromJSON().
• Fixed Input#origin() for unmapped end position (by @​chatman-media).

8.5.16

• Fixed Input#origin() position (by @​mizdra).
• Fixed raws after rehydrating a JSON AST (by @​sarathfrancis90).
• Fixed putting parent-less node in nodes of new node (by @​MahinAnowar).
• Fixed computing offset in positionBy() (by @​greymoth-jp).
• Fixed rangeBy() on index: 0 (by @​sarathfrancis90).

• 4c0d194 Release 8.5.18 version
• 92b4e78 Update dependencies
• 95663d3 Limit where source map can be loaded for security reasons
• 74e25ae Release 8.5.17 version
• d1518af Fix Maximum call stack size exceeded error
• 2421312 Fix linter
• a50352c Fix CI
• 33948f0 Prevent prototype hijacking in fromJSON
• 2131909 Update dependencies
• 93440ab Fix non-closed \<div align="center"> in README (#2110)
• Additional commits viewable in compare view

This version was pushed to npm by GitHub Actions, a new releaser for postcss since your current version.