CVE-2018-5116

Summary

WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefoxunspecified < 58affected

Weaknesses

  • WebExtension ActiveTab permission allows cross-origin frame content access

ADP Enrichment

CVE Program Container

Additional References

References