Wise Chat Plugin up to 2.6 on WordPress WiseChatLinksPostFilter.php redirect

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Wise Chat Plugin up to 2.6 on WordPress. This issue affects some unknown processing of the file rendering/filters/post/WiseChatLinksPostFilter.php. This manipulation causes redirect. This vulnerability is registered as CVE-2019-6780. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wise Chat Plugin up to 2.6 on WordPress (Chat Software). It has been declared as critical. Affected by this vulnerability is some unknown processing of the file rendering/filters/post/WiseChatLinksPostFilter.php. The manipulation with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

The Wise Chat plugin before 2.7 for WordPress mishandles external links because rendering/filters/post/WiseChatLinksPostFilter.php omits noopener and noreferrer.

The bug was discovered 01/25/2019. The weakness was published 01/24/2019 (Website). It is possible to read the advisory at plugins.trac.wordpress.org. This vulnerability is known as CVE-2019-6780 since 01/24/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1204.001 according to MITRE ATT&CK.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:rendering/filters/post/WiseChatLinksPostFilter.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46247). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Chat Software

Name

Wise Chat Plugin

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.1
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Wise Chat Plugin 2.7

Timelineinfo

01/24/2019 🔍
01/24/2019 +0 days 🔍
01/24/2019 +0 days 🔍
01/25/2019 +1 days 🔍
01/25/2019 +0 days 🔍
09/25/2025 +2435 days 🔍

Sourcesinfo

Advisory: 2016929
Status: Confirmed

CVE: CVE-2019-6780 (🔍)
GCVE (CVE): GCVE-0-2019-6780
GCVE (VulDB): GCVE-100-130255
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/25/2019 10:56
Updated: 09/25/2025 02:30
Changes: 01/25/2019 10:56 (59), 05/06/2020 10:02 (4), 07/03/2023 14:19 (4), 09/25/2025 02:30 (16)
Complete: 🔍
Cache ID: 216::103