CVE-2020-22785

Name: CVE-2020-22785
Creator: NVD / NIST
Published: 2021-04-28T21:15:08.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2020-22785 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Etherpad < 1.8.3 is affected by a missing lock check which could cause a denial of service. Aggressively targeting random pad import endpoints with empty data would flatten all pads due to lack of rate limiting and missing ownership check.. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

Etherpad < 1.8.3 is affected by a missing lock check which could cause a denial of service. Aggressively targeting random pad import endpoints with empty data would flatten all pads due to lack of rate limiting and missing ownership check.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.07%

60.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Etherpad	Etherpad	< 1.8.3

References

https://github.com/ether/etherpad-lite/pull/3833Exploit, Issue Tracking, Third Party Advisory
https://github.com/ether/etherpad-lite/pull/3833Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Apr 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22785?

How severe is CVE-2020-22785?

CVE-2020-22785 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22785?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-22785?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST