CVE-2026-85396

RubyGems/rubyzip CVE-2026-85396: high 7.5

rubyzip path traversal vulnerability

Action: Upgrade rubyzip to 3.4.0 or later.

bundle update rubyzip

Affected

Fixed versions

Sources

• osv: GHSA-47m2-wp7j-p9vc
• https://nvd.nist.gov/vuln/detail/CVE-2026-85396
• https://github.com/rubyzip/rubyzip/commit/17edfbf4423b83211b075acc23a7d8640da63449
• https://github.com/geo-chen/oss/blob/main/rubyzip.md
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubyzip/CVE-2026-85396.yml
• https://github.com/rubyzip/rubyzip
• https://github.com/rubyzip/rubyzip/blob/v3.3.1/lib/zip/entry.rb
• https://github.com/rubyzip/rubyzip/releases/tag/v3.4.0
• https://www.vulncheck.com/advisories/rubyzip-before-3.4.0-path-traversal-in-zip-entry-extract-via-sibling-directory-prefix

CVE-2026-85396 · published 2026-09-03T21:31:16Z · modified 2026-09-25T19:45:09.880068387Z · JSON