# Mermaid 11.16.1

- Product: Mermaid (https://whatsnew.fyi/product/mermaid)
- Vendor: Mermaid
- Date: 2026-08-04
- Version: 11.16.1
- Original notes: https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1
- Permalink: https://whatsnew.fyi/product/mermaid/releases/11.16.1

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Handle CSS sibling combinators in compileCSS
- **security** — Increase protections against prototype pollution
- **fixed** — Use Maps and Sets to store groups and services in architecture diagrams, rendering services in the order they are defined and supporting more service IDs
- **deprecated** — Deprecate the mermaidAPI.setConfig() function as it has no observable effect
- **fixed** — Support zero-width x-axis ranges in xychart
- **fixed** — Limit number of ticks to 32 in radar charts

###### Patch Changes

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`12d472c`](https://github.com/mermaid-js/mermaid/commit/12d472c9ed43f94814b110da8d7a9ae6dd5266ed) Thanks [@aloisklink](https://github.com/aloisklink)! - fix: handle CSS sibling combinators in compileCSS

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`2cd6dcf`](https://github.com/mermaid-js/mermaid/commit/2cd6dcf735533b323507e3e889ffdea870540b43) Thanks [@aloisklink](https://github.com/aloisklink)! - fix: increase protections against prototype pollution

    User-controlled input already has protections against prototype pollution.

    Fixes: GHSA-c4c3-pg64-4m4v

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`99af3fc`](https://github.com/mermaid-js/mermaid/commit/99af3fc35ef0a9a9c8c6314521344d67523ddccf) Thanks [@aloisklink](https://github.com/aloisklink)! - fix(architecture): use `Map`s and `Set`s to store groups/services

    Services are now rendered in the order they are defined and more service IDs
    are now supported.

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`2cd6dcf`](https://github.com/mermaid-js/mermaid/commit/2cd6dcf735533b323507e3e889ffdea870540b43) Thanks [@aloisklink](https://github.com/aloisklink)! - deprecate: Deprecate the `mermaidAPI.setConfig()` function

    Calling this function has no observable effect, as the next time a
    `render()` or `parse()` is called, the `currentConfig` is cleared.

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`630aa7e`](https://github.com/mermaid-js/mermaid/commit/630aa7e5dd417e1f56bff2a1ce8df2c5ad08d289) Thanks [@aloisklink](https://github.com/aloisklink)! - fix(xychart): support zero-width x-axis ranges

-   [#8022](https://github.com/mermaid-js/mermaid/pull/8022) [`59b22fa`](https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e) Thanks [@aloisklink](https://github.com/aloisklink)! - fix(radar): limit number of ticks to 32

    Setting a ticks value higher than this would only show 32 ticks.