modules:
  - module: std
    versions:
      - fixed: 1.19.9
      - introduced: 1.20.0-0
        fixed: 1.20.4
    vulnerable_at: 1.20.3
    packages:
      - package: html/template
        symbols:
          - cssValueFilter
          - escaper.commit
        derived_symbols:
          - Template.Execute
          - Template.ExecuteTemplate
summary: Improper sanitization of CSS values in html/template
description: |
    Angle brackets (<>) are not considered dangerous characters when inserted
    into CSS contexts. Templates containing multiple actions separated by a '/'
    character can result in unexpectedly closing the CSS context and allowing
    for injection of unexpected HTML, if executed with untrusted input.
credits:
  - Juho Nurminen of Mattermost
references:
  - report: https://go.dev/issue/59720
  - fix: https://go.dev/cl/491615
  - web: https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU
cve_metadata:
    id: CVE-2023-24539
    cwe: 'CWE-74: Improper input validation'