CKEditor4 up to 4.16.x HTML Processing HTML injection

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in CKEditor4 up to 4.16.x. This vulnerability affects unknown code of the component HTML Processing Module. The manipulation leads to HTML injection. This vulnerability is uniquely identified as CVE-2021-41165. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in CKEditor4 up to 4.16.x and classified as problematic. This issue affects an unknown code of the component HTML Processing Module. The manipulation with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.

The weakness was disclosed 11/18/2021 as GHSA-7h26-63m7-qhf2. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-41165 since 09/15/2021. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 211412 (Fedora 37 : ckeditor (2022-4c634ee466)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.17.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (211412). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: HTML injection
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211412
Nessus Name: Fedora 37 : ckeditor (2022-4c634ee466)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CKEditor4 4.17.0

Timelineinfo

09/15/2021 🔍
11/18/2021 +64 days 🔍
11/18/2021 +0 days 🔍
05/02/2025 +1261 days 🔍

Sourcesinfo

Advisory: GHSA-7h26-63m7-qhf2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-41165 (🔍)
GCVE (CVE): GCVE-0-2021-41165
GCVE (VulDB): GCVE-100-186827

Entryinfo

Created: 11/18/2021 06:43
Updated: 05/02/2025 22:05
Changes: 11/18/2021 06:43 (51), 11/21/2021 09:38 (1), 11/16/2024 06:39 (17), 05/02/2025 22:05 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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