How severe is CVE-2021-22150?

CVE-2021-22150 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22150 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22150?

CVE-2021-22150 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22150?

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

When was CVE-2021-22150 published?

CVE-2021-22150 was published on 2023-11-22 and last updated on 2026-06-17.

CVE-2021-22150

CVE-2021-22150 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 6.6. 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-94.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Elastic Kibana
Published: 2023-11-22
Last modified: 2026-06-17

Description

It was discovered that a user with Fleet admin permissions could upload a malicious package. Due to using an older version of the js-yaml library, this package would be loaded in an insecure manner, allowing an attacker to execute commands on the Kibana server.

Frequently asked questions

What is CVE-2021-22150?: It was discovered that a user with Fleet admin permissions could upload a malicious package. Due to using an older version of the js-yaml library, this package would be loaded in an insecure manner, allowing an attacker to execute commands on the Kibana server.
How severe is CVE-2021-22150?: CVE-2021-22150 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22150 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22150?: CVE-2021-22150 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22150?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22150 published?: CVE-2021-22150 was published on 2023-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*

More vulnerabilities in Elastic Kibana

CVE-2019-7609 — Critical (CVSS 10.0): Kibana versions before 5.6.15 and 6.6.1 contain an arbitrary code execution flaw in the Timelion visualizer. An…
CVE-2025-25015 — Critical (CVSS 9.9): Prototype pollution in Kibana leads to arbitrary code execution via a crafted file upload and specifically crafted HTTP…
CVE-2024-37288 — Critical (CVSS 9.9): A deserialization issue in Kibana can lead to arbitrary code execution when Kibana attempts to parse a YAML document…
CVE-2018-17246 — Critical (CVSS 9.8): Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the Console plugin. An attacker…
CVE-2018-17245 — Critical (CVSS 9.8): Kibana versions 4.0 to 4.6, 5.0 to 5.6.12, and 6.0 to 6.4.2 contain an error in the way authorization credentials are…
CVE-2025-25014 — Critical (CVSS 9.1): A Prototype pollution vulnerability in Kibana leads to arbitrary code execution via crafted HTTP requests to machine…

All CVEs affecting Elastic Kibana →

Other CWE-94 (Code Injection) vulnerabilities

CVE-2026-76605 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Remote code execution via image element in Fabrik < 4.7.3 - ???.
CVE-2026-76604 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Unauthenticated remote code execution via PHP form element in Fabrik < 4.7.3 - The…
CVE-2026-67364 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Pre-auth PHP Code Injection in Balbooa Forms < 2.4.3.2 - CWE-94 / CWE-95 | CVSS 3.1:…
CVE-2026-73343 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in WP Compress < 7.20.01 versions.
CVE-2026-74253 — Critical (CVSS 10.0): Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0…
CVE-2026-73678 — Critical (CVSS 10.0): MindsDB Minds Platform version 26.1.0 and earlier contains an unauthenticated remote code execution vulnerability that…

Browse all CWE-94 (Code Injection) vulnerabilities →