CVE-2019-20104

HIGH 7.5CVE-2019-20104 · Published 06/02/2020 · updated 17/06/2026

In short

CVE-2019-20104 is a HIGH (CVSS 7.5) vulnerability affecting crowd (atlassian).
Chance of exploitation in the next 30 days (EPSS): 2.4%, higher than 84.3% of all vulnerabilities.
Fix: update to 3.3.8, 3.4.7, 3.5.2, 3.6.2 or later.

Package	Affected versions	Patched versions
crowd atlassian	`≥ 3.3.0, < 3.3.8≥ 3.4.0, < 3.4.7≥ 3.5.0, < 3.5.2≥ 3.6.0, < 3.6.2≥ 3.6.3, < 3.7.1≥ 3.7.2, < 4.0.0< 3.2.11`	`3.3.83.4.73.5.23.6.23.7.14.0.03.2.11`

Description

The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.

References

jira.atlassian.com/browse/CWD-5526 · Vendor Advisory
zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion · Exploit

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Package

Affected versions

Patched versions

crowd

atlassian

≥ 3.3.0, < 3.3.8≥ 3.4.0, < 3.4.7≥ 3.5.0, < 3.5.2≥ 3.6.0, < 3.6.2≥ 3.6.3, < 3.7.1≥ 3.7.2, < 4.0.0< 3.2.11

3.3.83.4.73.5.23.6.23.7.14.0.03.2.11

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