# 7-Zip 26.03 — 7-Zip 26.03

- Product: 7-Zip (https://whatsnew.fyi/product/7-zip)
- Vendor: Igor Pavlov
- Date: 2026-09-04
- Version: 26.03
- Original notes: https://github.com/ip7z/7zip/releases/tag/26.03
- Permalink: https://whatsnew.fyi/product/7-zip/releases/26.03
- Labels: Platforms: Desktop

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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- **changed** — Improved support for Joliet ISO images and Compound archives
- **security** — Fixed CVE-2026-58052 where 7-Zip failed to preserve the Mark-of-the-Web when extracting a crafted archive
- **fixed** — Fixed some bugs and vulnerabilities

###### 7-Zip 26.03
- Improved support for Joliet ISO images and Compound archives.
- Some bugs and vulnerabilities were fixed.
- CVE-2026-58052 : 7-Zip failed to preserve the Mark-of-the-Web when extracting a crafted archive.