Note

• tpl/transform: Bump fileCacheEntryVersion in transform.ToMath (note) 8d88b8b @bep #15267
• resources/images: Bump formatVersionNumbers.PNG and fix version cache busting for images.Filter (note) d19e0a4 @bep #12536 #12543 #15266
• warpc/js: Upgrade katex to 0.18.4 (note) ec52e63 @bep #15254
• hexec: Fail on symlinks that escape the Node.js permission paths c05c012 @bep
• config/security: Deny text/org content by default e6abb9c @bep
• config/security: Add http.proxyFromEnvironment and document the resolved address check 6a2a955 @bep #15301 #15302 When upgrading to Hugo v0.166.0, sites using transform.ToMath with the output option set to html or htmlAndMathml must update the KaTeX stylesheet referenced in their template(s) to version 0.18.4 or higher. Using older CSS versions like 0.16.21 will cause certain mathematical or chemical expressions to render incorrectly. Example update:

• See these examples:

• https://gohugo.io/functions/transform/tomath/#step-3
• https://gohugo.io/render-hooks/passthrough/#example

Bug fixes

• tpl/strings: Fix replaceRE with zero-width assertions ae07063 @youdie006
• common/hreflect: Fix the off-by-one in the float to int overflow guards 5130d00 @youdie006
• resources/images: Fix filters on transparent colors and paletted images 7785668 @bep #12536 #12543
• github: Fix workflow for stale issues efe5cbc @jmooring #15261
• all: Run modernize -fix ./... 7b5199f @bep
• commands: Fix lang flag description in config command 87260e4 @jmooring #15223
• hugolib: Fix slice bounds panic when deleting multiple nodes at same path 49dceb1 @bep #15207
• hugolib: Fix ReadingTime and FuzzyWordCount calculations 5e70992 @jmooring #15206

Improvements

• js: Add es2025 as supported build target 857120b @bep #15307
• hugofs: Drop symlinked mount roots 938c820 @bep
• markup/highlight: Escape lineAnchors before passing it to Chroma 3b2d3b8 @bep
• tpl/partials: Slight performance improvement of the common partialCached case 9c2527f @bep
• Add internalExternal.IgnoreTailwindCSSSecurityError config option a36bd27 @bep
• config/security: Harden the default http.urls and resolved address checks (#15285) 24d5e42 @bep
• resources/images: Preserve the source palette for geometric filter chains 9e7c978 @bep #12543
• resources/images: Add golden test cases for geometric filter chains on paletted images 6b5b7d8 @bep #12543
• resources/images: Add some golden test cases 62e24b7 @bep #12536 #12543
• related: Speed up index creation f61346e @bep
• related: Add tokenize option for index values 850f11c @jmooring #7515 #15199
• resources/page: Don't let a title's "/" split an auto-derived slug 39507d5 @ipince #4092 #3577 #5571 #4090
• config/allconfig: Improve resilience of hugo mod init 90fe506 @jmooring #15253
• tpl: Separate deferred templates by escaping mode 49835f8 @Soundcreates #15234
• resources: Validate the resolved address on remote fetches d6e6f9e @bep #15247
• markup: Escape code-fence attribute values in the default renderer e4dc48c @bep #15247
• hugolib: Make .Render take an optional context argument bcde806 @bep #15077
• modules/npm: Make the generated workspace package private with a stable name df4ac34 @bep #15245
• common/hstore: Keep read lock while sorting map values 166d3ee @Soundcreates #15237
• metrics: Improve template metrics duration formatting a25af7f @Shiwang0-0 #15027
• Remove comments from rebuild test functions 723579f @bep
• hugolib: Add some fast render mode integration tests 85ad5e4 @bep
• Upgrade to Go 1.27 e31ff54 @bep #15228
• tpl: Improve the return keyword in templates 8405b80 @bep #15212
• page: Add IndexOf method to Pages bf05832 @Shiwang0-0 #13589
• tpl/resources: Add resources.Publish a05736c @bep #15208
• markup/pandoc: Support pandoc 3.11 and later 423e9ce @jmooring #15271 #15280

Dependency Updates

• build(deps): bump google.golang.org/grpc from 1.83.1 to 1.83.2 3fbfd27 @dependabot[bot]
• build(deps): bump golang.org/x/sync from 0.22.0 to 0.23.0 393de58 @dependabot[bot]
• build(deps): bump golang.org/x/mod from 0.40.0 to 0.41.0 870f746 @dependabot[bot]
• build(deps): bump github.com/getkin/kin-openapi from 0.146.0 to 0.149.0 6152e22 @dependabot[bot]
• build(deps): bump github.com/bits-and-blooms/bitset 5b6e7c2 @dependabot[bot]
• build(deps): bump github.com/bep/lazycache from 0.8.1 to 0.9.0 dc03bb2 @dependabot[bot]
• build(deps): bump github.com/bep/tmc from 0.6.0 to 0.7.0 701dd33 @dependabot[bot]
• build(deps): bump github.com/yuin/goldmark from 1.8.5 to 1.8.6 b4062c8 @dependabot[bot]
• build(deps): bump golang.org/x/image from 0.44.0 to 0.45.0 cdd1627 @dependabot[bot]
• deps: Upgrade github.com/gobwas/glob v0.2.3 => v1.0.0 efd2456 @bep #15273
• build(deps): bump golang.org/x/mod from 0.39.0 to 0.40.0 d462968 @dependabot[bot]
• build(deps): bump github.com/tdewolff/minify/v2 from 2.24.16 to 2.24.17 fd5f7c6 @dependabot[bot]
• build(deps): bump github.com/gohugoio/httpcache from 0.8.0 to 0.9.0 6b33517 @dependabot[bot]
• build(deps): bump google.golang.org/grpc from 1.82.1 to 1.83.1 5f0d88b @dependabot[bot]
• build(deps): bump golang.org/x/tools from 0.48.0 to 0.49.0 9171dae @dependabot[bot]
• build(deps): bump software.sslmate.com/src/go-pkcs12 from 0.7.0 to 0.7.2 d1ee825 @dependabot[bot]