How severe is CVE-2026-44885?

CVE-2026-44885 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-44885 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44885?

CVE-2026-44885 affects Portainer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44885?

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

Does CVE-2026-44885 have an EU (EUVD) identifier?

Yes. CVE-2026-44885 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33057.

When was CVE-2026-44885 published?

CVE-2026-44885 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-44885

CVE-2026-44885 is a medium-severity vulnerability in Portainer with a CVSS 3.x base score of 5.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33057
Weakness: CWE-22
Affected product: Portainer
Published: 2026-05-28
Last modified: 2026-06-17

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, Portainer's backup restore feature accepts a .tar.gz archive and extracts it to a target directory on the server. The extraction function (ExtractTarGz in api/archive/targz.go) constructed output paths using filepath.Clean(filepath.Join(outputDirPath, header.Name)). This combination does not prevent directory traversal — a tar entry named ../../etc/cron.d/evil resolves to a path outside the extraction root, so a crafted archive can write files to arbitrary locations on the server filesystem. This vulnerability is fixed in 2.33.8.

Frequently asked questions

What is CVE-2026-44885?: 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, Portainer's backup restore feature accepts a .tar.gz archive and extracts it to a target directory on the server. The extraction function (ExtractTarGz in api/archive/targz.go) constructed output paths using filepath.Clean(filepath.Join(outputDirPath, header.Name)). This combination does not prevent directory traversal — a tar entry named ../../etc/cron.d/evil resolves to a path outside the extraction root, so a crafted archive can write files to arbitrary locations on the server filesystem. This vulnerability is fixed in 2.33.8.
How severe is CVE-2026-44885?: CVE-2026-44885 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-44885 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44885?: CVE-2026-44885 affects Portainer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44885?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44885 have an EU (EUVD) identifier?: Yes. CVE-2026-44885 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33057.
When was CVE-2026-44885 published?: CVE-2026-44885 was published on 2026-05-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:portainer:portainer:*:*:*:*:community:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

160.191.87.178 (ipv4-addr)
51.159.103.72 (ipv4-addr)