module: std
package: archive/zip
versions:
  - introduced: go1.16
    fixed: go1.16.1
description: |
  Using Reader.Open on an archive containing a file with a path
  prefixed by "../" will cause a panic due to a stack overflow.
  If parsing user supplied archives, this may be used as a
  denial of service vector.
published: 2021-04-14T12:00:00Z
cves:
  - CVE-2021-27919
symbols:
  - toValidName
links:
  pr: https://go-review.googlesource.com/c/go/+/300489
  commit: https://go.googlesource.com/go/+/cd3b4ca9f20fd14187ed4cdfdee1a02ea87e5cd8
  context:
    - https://go.dev/issue/44916