How severe is CVE-2019-20412?

CVE-2019-20412 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-20412 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20412?

CVE-2019-20412 primarily affects Atlassian Jira. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-20412?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-20412 published?

CVE-2019-20412 was published on 2020-06-29 and last updated on 2026-06-17.

CVE-2019-20412

CVE-2019-20412 is a medium-severity vulnerability in Atlassian Jira with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Atlassian Jira
Published: 2020-06-29
Last modified: 2026-06-17

Description

The Convert Sub-Task to Issue page in affected versions of Atlassian Jira Server and Data Center allow remote attackers to enumerate the following information via an Improper Authentication vulnerability: Workflow names; Project Key, if it is part of the workflow name; Issue Keys; Issue Types; Status Types. The affected versions are before version 7.13.9, and from version 8.0.0 before 8.4.2.

Frequently asked questions

What is CVE-2019-20412?: The Convert Sub-Task to Issue page in affected versions of Atlassian Jira Server and Data Center allow remote attackers to enumerate the following information via an Improper Authentication vulnerability: Workflow names; Project Key, if it is part of the workflow name; Issue Keys; Issue Types; Status Types. The affected versions are before version 7.13.9, and from version 8.0.0 before 8.4.2.
How severe is CVE-2019-20412?: CVE-2019-20412 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-20412 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20412?: CVE-2019-20412 primarily affects Atlassian Jira. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-20412?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20412 published?: CVE-2019-20412 was published on 2020-06-29 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/JRASERVER-70882

Affected products (4)

cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:*

More vulnerabilities in Atlassian Jira

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CVE-2019-20409 — Critical (CVSS 9.8): The way in which velocity templates were used in Atlassian Jira Server and Data Center prior to version 8.8.0 allowed…
CVE-2017-5983 — Critical (CVSS 9.8): The JIRA Workflow Designer Plugin in Atlassian JIRA Server before 6.3.0 improperly uses an XML parser and deserializer,…
CVE-2012-2926 — Critical (CVSS 9.1): Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before 4.1.10; FishEye and Crucible…
CVE-2010-1165 — Critical (CVSS 9.0): Atlassian JIRA 3.12 through 4.1 allows remote authenticated administrators to execute arbitrary code by modifying the…
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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
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