vanessa219 Vditor up to 3.8.6 Copy/Paste cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in vanessa219 Vditor up to 3.8.6. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Copy/Paste Handler. Executing a manipulation can lead to cross site scripting. The identification of this vulnerability is CVE-2021-32855. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in vanessa219 Vditor up to 3.8.6 and classified as problematic. This vulnerability affects some unknown processing of the component Copy/Paste Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

Vditor is a browser-side Markdown editor. Versions prior to 3.8.7 are vulnerable to copy-paste cross-site scripting (XSS). For this particular type of XSS, the victim needs to be fooled into copying a malicious payload into the text editor. Version 3.8.7 contains a patch for this issue.

The weakness was shared 02/21/2023 as 1085. The advisory is shared for download at securitylab.github.com. This vulnerability was named CVE-2021-32855 since 05/12/2021. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 3.8.7 eliminates this vulnerability. Applying the patch 1b2382d7f8a4ee509d9245db4450d926a0b24146 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-0798). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Vditor 3.8.7
Patch: 1b2382d7f8a4ee509d9245db4450d926a0b24146

Timelineinfo

05/12/2021 🔍
02/21/2023 +650 days 🔍
02/21/2023 +0 days 🔍
07/05/2025 +865 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1085
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-32855 (🔍)
GCVE (CVE): GCVE-0-2021-32855
GCVE (VulDB): GCVE-100-221584
EUVD: 🔍

Entryinfo

Created: 02/21/2023 20:59
Updated: 07/05/2025 21:26
Changes: 02/21/2023 20:59 (54), 07/05/2025 21:26 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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