Etherpad Lite up to 1.6.2 JSONP apicalls.js access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in Etherpad Lite up to 1.6.2 and classified as critical. Affected by this vulnerability is an unknown code block of the file node/hooks/express/apicalls.js of the component JSONP Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

node/hooks/express/apicalls.js in Etherpad Lite before v1.6.3 mishandles JSONP, which allows remote attackers to bypass intended access restrictions.

The bug was discovered 02/07/2018. The weakness was shared 02/08/2018 (GitHub Repository). It is possible to read the advisory at This vulnerability is known as CVE-2018-6835 since 02/07/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.6.3 eliminates this vulnerability.

The entry 112998 is related to this item.




  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍



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

NVD Base Score: 🔍


Class: Access control
CWE: CWE-284 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Etherpad Lite 1.6.3


02/07/2018 🔍
02/07/2018 +0 days 🔍
02/08/2018 +1 days 🔍
02/08/2018 +0 days 🔍
02/08/2018 +0 days 🔍
02/06/2023 +1824 days 🔍


Advisory: 626e58cc5af1db3691b41fca7b06c28ea43141b1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6835 (🔍)
See also: 🔍


Created: 02/08/2018 06:24 PM
Updated: 02/06/2023 08:33 AM
Changes: 02/08/2018 06:24 PM (59), 01/03/2020 06:22 AM (2), 02/06/2023 08:33 AM (6)
Complete: 🔍


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