What is CVE-2019-20104?

CVE-2019-20104 is a vulnerability in Atlassian Crowd. Published 2020-02-06.

Is CVE-2019-20104 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Atlassian Crowd

CVE-2019-20104

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.

EPSS: 0.024 (85.5th percentile) — read the EPSS interpretation.

Affected products

Atlassian Crowd — versions unspecified, 3.7.0, unspecified

Public proof-of-concept exploits

20142995/nuclei-templates
cyb3r-w0lf/nuclei-template-collection

References

jira.atlassian.com/browse/CWD-5526 (x_refsource_MISC)
zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulne… (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-20104?: CVE-2019-20104 is a vulnerability in Atlassian Crowd. Published 2020-02-06.
Is CVE-2019-20104 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.