How severe is CVE-2020-14189?

CVE-2020-14189 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-14189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14189?

CVE-2020-14189 affects Atlassian Jira Comment. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14189?

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

When was CVE-2020-14189 published?

CVE-2020-14189 was published on 2020-11-09 and last updated on 2026-06-17.

CVE-2020-14189

CVE-2020-14189 is a critical-severity vulnerability in Atlassian Jira Comment with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atlassian Jira Comment
Published: 2020-11-09
Last modified: 2026-06-17

Description

The execute function in in the Atlassian gajira-comment GitHub Action before version 2.0.2 allows remote attackers to execute arbitrary code in the context of a GitHub runner by creating a specially crafted GitHub issue comment.

Frequently asked questions

What is CVE-2020-14189?: The execute function in in the Atlassian gajira-comment GitHub Action before version 2.0.2 allows remote attackers to execute arbitrary code in the context of a GitHub runner by creating a specially crafted GitHub issue comment.
How severe is CVE-2020-14189?: CVE-2020-14189 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-14189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14189?: CVE-2020-14189 affects Atlassian Jira Comment. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-14189 published?: CVE-2020-14189 was published on 2020-11-09 and last updated on 2026-06-17.

References

https://github.com/atlassian/gajira-comment/security/advisories/GHSA-hj6w-pm28-h8hf

Affected products (1)

cpe:2.3:a:atlassian:jira_comment:*:*:*:*:*:*:*:*