CVE-2026-44849

CVE-2026-44849 is a high-severity vulnerability in Portainer with a CVSS 3.x base score of 8.8. 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-862.

Key facts

• Severity: High (CVSS 3.x base score 8.8)
• CVSS v4: 9.4
• EPSS exploit prediction: 0% (37th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2026-33063
• Weakness: CWE-862
• Affected product: Portainer
• Published: 2026-05-28
• Last modified: 2026-07-21

Description

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8, 2.39.2, and 2.41.0, Portainer enforces seven EndpointSecuritySettings restrictions that administrators configure to restrict the container configurations non-admin users can launch: privileged mode, host PID namespace, device mapping, capabilities, sysctls, security-opt (Seccomp / AppArmor), and bind mounts. These restrictions are enforced on the standard container creation path, but several of them are not applied on the Docker Swarm service API. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.

Frequently asked questions

What is CVE-2026-44849?

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8, 2.39.2, and 2.41.0, Portainer enforces seven EndpointSecuritySettings restrictions that administrators configure to restrict the container configurations non-admin users can launch: privileged mode, host PID namespace, device mapping, capabilities, sysctls, security-opt (Seccomp / AppArmor), and bind mounts. These restrictions are enforced on the standard container creation path, but several of them are not applied on the Docker Swarm service API. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.

How severe is CVE-2026-44849?

CVE-2026-44849 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-44849 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44849?

CVE-2026-44849 primarily affects Portainer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-44849?

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.

Does CVE-2026-44849 have an EU (EUVD) identifier?

Yes. CVE-2026-44849 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33063.

When was CVE-2026-44849 published?

CVE-2026-44849 was published on 2026-05-28 and last updated on 2026-07-21.

References

• https://github.com/portainer/portainer/security/advisories/GHSA-5fxq-qcf3-244w

Affected products (2)

• cpe:2.3:a:portainer:portainer:*:*:*:*:community:*:*:*
• cpe:2.3:a:portainer:portainer:2.40.0:*:*:*:community:*:*:*

More vulnerabilities in Portainer

• CVE-2026-44881 — Critical (CVSS 9.9): Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used…
• CVE-2019-16872 — Critical (CVSS 9.9): Portainer before 1.22.1 has Incorrect Access Control (issue 1 of 4).
• CVE-2022-24961 — Critical (CVSS 9.8): In Portainer Agent before 2.11.1, an API server can continue running even if not associated with a Portainer instance…
• CVE-2020-24264 — Critical (CVSS 9.8): Portainer 1.24.1 and earlier is affected by incorrect access control that may lead to remote arbitrary code execution.…
• CVE-2018-19466 — Critical (CVSS 9.8): A vulnerability was found in Portainer before 1.20.0. Portainer stores LDAP credentials, corresponding to a master…
• CVE-2018-19367 — Critical (CVSS 9.8): Portainer through 1.19.2 provides an API endpoint (/api/users/admin/check) to verify that the admin user is already…

All CVEs affecting Portainer →

Other CWE-862 (Missing Authorization) vulnerabilities

• CVE-2026-101000 — Critical (CVSS 10.0): A vulnerability was determined in Netcore NBR100V2 1.3.240614.030928. This affects the function uci.apply of the file…
• CVE-2026-97360 — Critical (CVSS 10.0): HFS2 version 2.4.0 and earlier contains an unauthenticated arbitrary file access vulnerability that allows…
• CVE-2026-65381 — Critical (CVSS 10.0): A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the…
• CVE-2026-81648 — Critical (CVSS 10.0): The CryptoPayment Gateway WordPress plugin from 1.2.1 to 1.2.2 does not apply an authorization check on one of its AJAX…
• CVE-2026-77770 — Critical (CVSS 10.0): The miniOrange 2FA WordPress plugin before 6.3.1, miniOrange 2FA WordPress plugin before 19.3 does not require a…
• CVE-2026-65667 — Critical (CVSS 10.0): Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-862 (Missing Authorization) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 171.25.158.80 (ipv4-addr)
• 62.84.186.124 (ipv4-addr)
• 160.191.87.178 (ipv4-addr)
• 115.146.121.185 (ipv4-addr)
• 217.154.68.73 (ipv4-addr)
• 51.159.103.72 (ipv4-addr)
• 200.31.165.230 (ipv4-addr)
• 5.9.117.67 (ipv4-addr)