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Origin Validation Error

CVE-2021-38497

Medium
6.5/10

Summary

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • REQUIRED
  • NONE
  • NONE
  • NONE

CWE-346 - Origin Validation Error

The software does not properly verify that the source of data or communication is valid.

References

Advisory Timeline

  • Published