CVE-2019-17022 - CVE House

Back to Database

Status published Medium CVE-2019-17022

When pasting a <style> tag from the clipboard into a...

6.1 CVSS

Vulnerability Description

When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two WYSIWYG editors were identified with this behavior, more may exist. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2019-17022

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from Mozilla

View All →

Memory safety bugs fixed in Firefox 142 and Thunderbird 142

Spoofing issue in the Address Bar component of Firefox Focus for Android

Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14, Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142

Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142

Spoofing issue in the Address Bar component

Affected Vendor

Mozilla

View all reports →

Affected Software

Firefox ESR, Firefox

Vulnerable Versions:

before 68.4, before 72

Timeline

Official Publish: January 8th, 2020

Last Modified: August 5th, 2024

Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.