CVE-2018-6835 Etherpad Lite Access Restriction Bypass

Critical 9.8 Published 8 Feb 2018 Updated 5 Aug 2024

Remote attackers can bypass intended access restrictions in Etherpad Lite due to improper handling of JSONP requests.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-6835?

CVE-2018-6835 is a critical vulnerability in n/a, published on 8 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-20

Which versions are affected by CVE-2018-6835?

2 open source packages ship an affected version, including ep_etherpad-lite. It affects 1 product.

Package	Affected	Fixed in
`ep_etherpad-lite` npm	All versions	`1.6.3`
`ep_etherpad-lite` npm	All versions	`1.6.3`

Products include Etherpad Etherpad.

How do I fix CVE-2018-6835?

Upgrade ep_etherpad-lite to 1.6.3 or later.

Is CVE-2018-6835 being exploited?

There is no known exploitation of CVE-2018-6835 in the wild and no public exploit code.

Sources

Also known as GHSA-mvmv-rq2j-97p2.