# servo v0.1.2 — v0.1.2 (LTS)

- Product: servo (https://whatsnew.fyi/product/servo)
- Vendor: servo
- Date: 2026-07-06
- Version: v0.1.2
- Original notes: https://github.com/servo/servo/releases/tag/v0.1.2
- Permalink: https://whatsnew.fyi/product/servo/releases/v0.1.2

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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- **security** — Update SpiderMonkey from ESR 140.10 to 140.12 to pull in security fixes from MFSA 2026-48 and MFSA 2026-58
- **security** — Backport 24 security related changes to the LTS
- **security** — Harden javascript: URL evaluation
- **security** — Pass rooted UnderlyingSourceContainer to ReadableStream

##### What's Changed

This release includes an updated Spidermonkey from ESR 140.10 to 140.12, pulling in security fixes from [MFSA 2026-48](https://www.mozilla.org/en-US/security/advisories/mfsa2026-48/) and [MFSA 2026-58](https://www.mozilla.org/en-US/security/advisories/mfsa2026-58/), including https://github.com/advisories/GHSA-6cv4-3h2g-632h, https://github.com/advisories/GHSA-93pv-vhrf-wv64 and https://github.com/advisories/GHSA-4885-5pch-3x6m.
Additionally, we backported 24 security related changes to the LTS. View the full changelog below for more details.

* LTS: Cherry-pick 22 commits onto the 0.1 LTS release branch by @jschwe in https://github.com/servo/servo/pull/46006
* LTS: Update mozjs to SM ESR 140.12 by @jschwe in https://github.com/servo/servo/pull/46038
* backport: script: Harden javascript: URL evaluation. (#45913) by @jschwe in https://github.com/servo/servo/pull/46088
* backport: script: Pass rooted UnderlyingSourceContainer to ReadableSt… by @jschwe in https://github.com/servo/servo/pull/46086
* LTS: Prepare 0.1.2 release by @jschwe in https://github.com/servo/servo/pull/46112
* Backported a few CI fixes to related to publishing


**Full Changelog**: https://github.com/servo/servo/compare/v0.1.1...v0.1.2