CVE-2021-38503

Summary

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefoxunspecified < 94affected
MozillaThunderbirdunspecified < 91.3affected
MozillaFirefox ESRunspecified < 91.3affected

Weaknesses

  • iframe sandbox rules did not apply to XSLT stylesheets

ADP Enrichment

CVE Program Container

Additional References

References