High severity7.5NVD Advisory· Published Feb 6, 2020· Updated Jun 17, 2026

CVE-2019-20104

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Atlassian/Crowd3 versions
cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*range: <3.2.11
- (no CPE)range: <3.6.2, 3.7.0 < 3.7.1
- (no CPE)range: unspecified
Atlassian/OpenID clientllm-create
Range: <3.6.2, 3.7.0 < 3.7.1

Patches

Vulnerability mechanics

References

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

News mentions

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