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01 Record

CVE-2019-17016

When pasting a <style> 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

UnratedPUBLISHEDCNA: mozilla
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

When pasting a <style> 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.98% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 80.4% of scored records. A rank, not a probability.
NVD base score
6.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-01-08 21:27Z6 YR AGO
Last updated
2024-08-05 01:24Z2 YR AGO
Reserved
2019-09-30
Assigning CNA
mozilla
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.1
Document digest
68b64c9a51ef992cfe9f30d31fa7cc3cb16d9e1600b8ae274fdfc73cf0fdcebe

05 Affected products

VendorProductVersionsPlatforms
MozillaFirefox ESRbefore 68.4—
MozillaFirefoxbefore 72—

06 References

07 Fixed in

Arch Linux

  • firefox
    Fixed in 72.0-1
  • thunderbird
    Fixed in 68.4.1-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • firefox-esr
    Fixed in 68.4.0esr-1
  • thunderbird
    Fixed in 1:68.4.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • firefox-esr
    Fixed in 68.4.0esr-1
  • thunderbird
    Fixed in 1:68.4.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • firefox-esr
    Fixed in 68.4.0esr-1
  • thunderbird
    Fixed in 1:68.4.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • firefox
    Fixed in 72.0.1+build1-0ubuntu0.16.04.1
  • thunderbird
    Fixed in 1:68.7.0+build1-0ubuntu0.16.04.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • firefox
    Fixed in 72.0.1+build1-0ubuntu0.18.04.1
  • mozjs38
    No fix yet
  • mozjs52
    No fix yet
  • thunderbird
    Fixed in 1:68.4.1+build1-0ubuntu0.18.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • firefox
    Fixed in 72.0.1+build1-0ubuntu1
  • mozjs52
    No fix yet
  • thunderbird
    Fixed in 1:68.4.1+build1-0ubuntu1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.