# Astro astro@7.2.1

- Product: Astro (https://whatsnew.fyi/product/astro)
- Vendor: Astro
- Date: 2026-08-11
- Version: astro@7.2.1
- Original notes: https://github.com/withastro/astro/releases/tag/astro%407.2.1
- Permalink: https://whatsnew.fyi/product/astro/releases/astro-7.2.1

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** — Fix CSS hot module replacement after navigating between pages with ClientRouter
- **fixed** — Fix CSP violation when using both security.csp and experimental.clientPrerender with data-astro-prefetch links by using a static speculationrules approach with deterministic hashing
- **fixed** — Fix middleware HMR not responding to changes in imported modules
- **fixed** — Fix content collection reference() fields silently accepting entry IDs that don't exist by logging an error for missing references
- **fixed** — Fix requests handled by the dev prerender environment returning 500 when a prerendered catch-all route existed
- **fixed** — Fix video and audio elements being non-functional after navigating via view transitions
- **fixed** — Fix experimental.incrementalBuild re-rendering unchanged routes that import more than one asset by basing hash on resolved file names
- **changed** — Improve getCollection() and getEntry() performance for entries without local image references
- **fixed** — Fix build error caused by hash collisions in generated content collection image import identifiers

###### Patch Changes

-   [#17612](https://github.com/withastro/astro/pull/17612) [`7133730`](https://github.com/withastro/astro/commit/71337304965425820e81cc27d54b95d23033c017) Thanks [@thelazylamaGit](https://github.com/thelazylamaGit)! - Fixes CSS hot module replacement after navigating between pages with `ClientRouter`

-   [#17628](https://github.com/withastro/astro/pull/17628) [`4ada248`](https://github.com/withastro/astro/commit/4ada24889fc1bcc1ee89f3f8e5c6bc4cbe87cce6) Thanks [@astrobot-houston](https://github.com/astrobot-houston)! - Fixes a CSP violation when using both `security.csp` and `experimental.clientPrerender` with `data-astro-prefetch` links. The dynamically injected `<script type="speculationrules">` now uses a static `"source": "document"` approach with a CSS selector, producing a deterministic payload that is hashed and included in the CSP `script-src` directive at build time.

-   [#17605](https://github.com/withastro/astro/pull/17605) [`89e4647`](https://github.com/withastro/astro/commit/89e4647bed74e65a2fc1c60ccb5a7fc6b7bf3bc4) Thanks [@ashleigh-yeoman](https://github.com/ashleigh-yeoman)! - Fixes middleware HMR not responding to changes in imported modules. Previously, only direct edits to the middleware file would trigger a reload.

-   [#17582](https://github.com/withastro/astro/pull/17582) [`bd2c1a5`](https://github.com/withastro/astro/commit/bd2c1a5a70666cc140c73a77edb41882fc88b277) Thanks [@astrobot-houston](https://github.com/astrobot-houston)! - Fixes a regression where content collection `reference()` fields silently accepted entry IDs that don't exist, such as an ID that doesn't match a loader's slugified version of it. Astro now logs an error for references that point to a missing entry after all loaders finish syncing.

-   [#17661](https://github.com/withastro/astro/pull/17661) [`97b0cc7`](https://github.com/withastro/astro/commit/97b0cc79c586bb1fc2ce2ffe4c420f3cf2db769e) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Improves Markdown options documentation with links to the Markdown guide and official processors.

-   [#17349](https://github.com/withastro/astro/pull/17349) [`4328c73`](https://github.com/withastro/astro/commit/4328c736b18d36576429186445c8c89e8cd0d4b6) Thanks [@astrobot-houston](https://github.com/astrobot-houston)! - Fixes an issue where requests handled by the dev prerender environment (e.g. `/_image` with `@astrojs/cloudflare`'s `prerenderEnvironment: 'node'`) returned a 500 when a prerendered catch-all route existed, because non-prerendered route modules were imported in an environment where their runtime-specific APIs are unavailable

-   [#17603](https://github.com/withastro/astro/pull/17603) [`722eed6`](https://github.com/withastro/astro/commit/722eed64c4ec878a4778ab312599733b325b21ca) Thanks [@astrobot-houston](https://github.com/astrobot-houston)! - Fixes `<video>` and `<audio>` elements being non-functional after navigating via view transitions (`<ClientRouter />`)

-   [#17616](https://github.com/withastro/astro/pull/17616) [`3a890d2`](https://github.com/withastro/astro/commit/3a890d226482e98c41650fb66c0c14d45eba2717) Thanks [@lazerg](https://github.com/lazerg)! - Fixes `experimental.incrementalBuild` re-rendering unchanged routes that import more than one asset. The route's dependency hash depended on the order the assets finished building, so two builds of identical sources could produce different hashes. The hash is now based on the file name each asset resolves to.

-   [#17547](https://github.com/withastro/astro/pull/17547) [`fba468c`](https://github.com/withastro/astro/commit/fba468c228d8661d2383a80c74206075201a187b) Thanks [@dmgawel](https://github.com/dmgawel)! - Improves `getCollection()` and `getEntry()` performance for entries without local image references

-   [#17602](https://github.com/withastro/astro/pull/17602) [`16e0d9d`](https://github.com/withastro/astro/commit/16e0d9d5c1b289242d317887e8334506627f2233) Thanks [@astrobot-hous

_[Truncated at 4000 characters — full notes: https://github.com/withastro/astro/releases/tag/astro%407.2.1]_