id: GO-2021-0234
modules:
    - module: std
      versions:
        - fixed: 1.15.9
        - introduced: 1.16.0-0
        - fixed: 1.16.1
      vulnerable_at: 1.16.0
      packages:
        - package: encoding/xml
          symbols:
            - Decoder.Token
          skip_fix: 'TODO: revisit this reason (fix appears to not work with Go <1.18)'
summary: Infinite loop when decoding inputs in encoding/xml
description: |-
    The Decode, DecodeElement, and Skip methods of an xml.Decoder provided by
    xml.NewTokenDecoder may enter an infinite loop when operating on a custom
    xml.TokenReader which returns an EOF in the middle of an open XML element.
published: 2022-02-17T17:34:24Z
cves:
    - CVE-2021-27918
credits:
    - Sam Whited
references:
    - fix: https://go.dev/cl/300391
    - fix: https://go.googlesource.com/go/+/d0b79e3513a29628f3599dc8860666b6eed75372
    - report: https://go.dev/issue/44913
    - web: https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw
review_status: REVIEWED