How severe is CVE-2026-72676?

CVE-2026-72676 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-72676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-72676?

CVE-2026-72676 primarily affects Elastic Kibana. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-72676?

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

When was CVE-2026-72676 published?

CVE-2026-72676 was published on 2026-08-13 and last updated on 2026-09-04.

CVE-2026-72676

CVE-2026-72676 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 6.5. 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 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Elastic Kibana
Published: 2026-08-13
Last modified: 2026-09-04

Description

Improper Control of Generation of Code ('Code Injection') (CWE-94) in Fleet Server can lead to the execution of attacker-supplied script content via Code Injection (CAPEC-242). Kibana accepted an identifier for an output configuration without restricting it to safe characters. That identifier is later placed into a server-side script that Fleet Server builds as part of routine agent policy processing, so script syntax embedded in the identifier became part of the script that was executed rather than being treated as data.

Frequently asked questions

What is CVE-2026-72676?: Improper Control of Generation of Code ('Code Injection') (CWE-94) in Fleet Server can lead to the execution of attacker-supplied script content via Code Injection (CAPEC-242). Kibana accepted an identifier for an output configuration without restricting it to safe characters. That identifier is later placed into a server-side script that Fleet Server builds as part of routine agent policy processing, so script syntax embedded in the identifier became part of the script that was executed rather than being treated as data.
How severe is CVE-2026-72676?: CVE-2026-72676 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-72676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-72676?: CVE-2026-72676 primarily affects Elastic Kibana. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-72676?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-72676 published?: CVE-2026-72676 was published on 2026-08-13 and last updated on 2026-09-04.

References

https://discuss.elastic.co/t/fleet-server-8-19-20-9-4-5-9-5-1-security-update-esa-2026-93/389510

Affected products (2)

cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
cpe:2.3:a:elastic:kibana:9.5.0:*:*:*:*:*:*:*

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-2026-105857 — Critical (CVSS 10.0): Payload is a free and open source headless content management system. In @payloadcms/plugin-form-builder versions…
CVE-2026-55107 — Critical (CVSS 10.0): Kobako is a Ruby gem that embeds a Wasm-isolated mruby interpreter inside applications, allowing execution of untrusted…
CVE-2026-96349 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in SiteSkite <= 2.1.8 versions.
CVE-2026-102425 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Unauthenticated RCE via field shortcode injection in Balbooa Forms < 2.4.3.4 - Balbooa…
CVE-2026-89275 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability…
CVE-2026-84412 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability…

Browse all CWE-94 (Code Injection) vulnerabilities →