CVE-2019-17000

MEDIUM

Firefox < 70.0 - Cross-Site Scripting via Object Tag Data URI CSP Bypass

Title source: llm

Description

An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This vulnerability affects Firefox < 70.

References (2)

Core 2

Core References

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2019-34/

Permissions Required x_refsource_misc

https://bugzilla.mozilla.org/show_bug.cgi?id=1441468

Scores

CVSS v3 6.1

EPSS 0.0016

EPSS Percentile 36.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE

CWE-79

Status published

Products (1)

mozilla/firefox < 70.0

Published Jan 08, 2020

Tracked Since Feb 18, 2026