CVE-2021-34817

Public Exploit

Description

A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Vendor Advisory etherpad.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://etherpad.org/#download patch vendor advisory
https://github.com/ether/etherpad-lite/releases/tag/1.8.14 release notes third party advisory patch
https://blog.sonarsource.com/etherpad-code-execution-vulnerabilities third party advisory
https://github.com/ether/etherpad-lite/commit/a7968115581e20ef47a533e030f59f830486bdfa exploit third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-34817?
CVE-2021-34817 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34817?
To fix CVE-2021-34817, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34817 being actively exploited in the wild?
It is possible that CVE-2021-34817 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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