# Audiobookshelf v2.33.2

- Product: Audiobookshelf (https://whatsnew.fyi/product/audiobookshelf)
- Vendor: advplyr
- Date: 2026-04-19
- Version: v2.33.2
- Original notes: https://github.com/advplyr/audiobookshelf/releases/tag/v2.33.2
- Permalink: https://whatsnew.fyi/product/audiobookshelf/releases/v2.33.2

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** — Matroska audiobooks (.mka) with the Opus codec failing to play in web client
- **fixed** — Share player not using libraries cover aspect ratio setting
- **fixed** — Backup uploads leaving temporary files behind when the uploaded file failed validation
- **fixed** — Path traversal check on the filesystem path-exists endpoint not handling all edge cases
- **changed** — Bulk download endpoint now ensures all requested items belong to the library being requested
- **changed** — Backup load and upload now validate the backup details entry exists and is within a reasonable size limit
- **changed** — Podcast create endpoint validates that the podcast path is inside the selected library folder
- **changed** — Author and library item cover image endpoints now clamp width/height query params to a maximum of 4096
- **changed** — Podcast episode subtitles parsed from RSS feeds are now sanitized for HTML
- **changed** — author_updated and author_added socket events are now emitted when updating authors in the book details edit modal
- **changed** — item_removed socket event payload now includes libraryId so clients can ignore events for other libraries

###### Important: New authentication system was added in [v2.26.0](https://github.com/advplyr/audiobookshelf/releases/tag/v2.26.0). See https://github.com/advplyr/audiobookshelf/discussions/4460 for details.

###### Fixed

- Matroska audiobooks (`.mka`) with the Opus codec failing to play in web client by @rktjmp in #5115
- UI/UX: Share player not using libraries cover aspect ratio setting
- Backup uploads leaving temporary files behind when the uploaded file failed validation
- Path traversal check on the filesystem path-exists endpoint not handling all edge cases

###### Changed

- Bulk download endpoint now ensures all requested items belong to the library being requested
- Backup load and upload now validate the backup `details` entry exists and is within a reasonable size limit
- Podcast create endpoint validates that the podcast path is inside the selected library folder
- Author and library item cover image endpoints now clamp width/height query params to a maximum of 4096
- Podcast episode subtitles parsed from RSS feeds are now sanitized for HTML
- `author_updated`/`author_added` socket events emitted when updating authors in the book details edit modal by @mikiher in #5158
- `item_removed` socket event payload now includes `libraryId` so clients can ignore events for other libraries by @mikiher in #5160
- More strings translated
  - Belarusian by @pavel-miniutka
  - Bulgarian by @lembata
  - German by @JBlond @LaurinSorgend
  - Italian by @tizio04
  - Russian by @Hopelite @vmakeev
  - Spanish by @cyphra

##### New Contributors
* @rktjmp made their first contribution in https://github.com/advplyr/audiobookshelf/pull/5115

**Full Changelog**: https://github.com/advplyr/audiobookshelf/compare/v2.33.1...v2.33.2