How severe is CVE-2019-20902?

CVE-2019-20902 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-20902 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20902?

CVE-2019-20902 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20902?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-20902 published?

CVE-2019-20902 was published on 2020-10-01 and last updated on 2026-06-17.

CVE-2019-20902

CVE-2019-20902 is a high-severity vulnerability in Atlassian Crowd with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atlassian Crowd
Published: 2020-10-01
Last modified: 2026-06-17

Description

Upgrading Crowd via XML Data Transfer can reactivate a disabled user from OpenLDAP. The affected versions are from before version 3.4.6 and from 3.5.0 before 3.5.1.

Frequently asked questions

What is CVE-2019-20902?: Upgrading Crowd via XML Data Transfer can reactivate a disabled user from OpenLDAP. The affected versions are from before version 3.4.6 and from 3.5.0 before 3.5.1.
How severe is CVE-2019-20902?: CVE-2019-20902 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-20902 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20902?: CVE-2019-20902 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20902?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-20902 published?: CVE-2019-20902 was published on 2020-10-01 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/CWD-5409

Affected products (1)

cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*

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