CVE-2019-17016

MEDIUM
6.1
CVSS Score
Published: January 8, 2020 at 09:27 PM UTC
Updated: June 17, 2026 at 02:23 AM UTC
9 products affected across 4 vendorsDebian LinuxUbuntu LinuxFirefox

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Severity
MEDIUM6.1
Exploit prediction
EPSS 2%

Description

When pasting a &lt;style&gt; tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 72v < 72.0
Affected range stops below 72, so it looks safe — our inference, not a vendor statement
Affected range stops below 72.0, so it looks safe — our inference, not a vendor statement
v < 68.4
Affected range stops below 68.4, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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