CVE-2020-29450

Name: CVE-2020-29450
Creator: NVD / NIST
Published: 2021-01-19T01:15:14.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.21%

Last modified Jun 17, 2026

CVE-2020-29450 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Affected versions of Atlassian Confluence Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the avatar upload feature. The affected versions are before version 7.2.0.. EPSS estimates a 2.21% chance of exploitation in the next 30 days.

Description

Affected versions of Atlassian Confluence Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the avatar upload feature. The affected versions are before version 7.2.0.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.21%

80.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Atlassian	Confluence Data Center	< 7.2.0
Atlassian	Confluence Server	< 7.2.0

References

https://jira.atlassian.com/browse/CONFSERVER-60854Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-60854Issue Tracking, Vendor Advisory

Timeline

Published: Jan 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29450?

How severe is CVE-2020-29450?

CVE-2020-29450 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.21% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29450?

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-2020-29450?

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

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Source: NVD / NIST