cvedb.io
CVE-2026-44883
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-28T22:16:59.537 · Last modified 2026-06-17T10:51:28.733

Summary

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's authentication middleware accepts JWT bearer tokens passed as the ?token=<JWT> URL query parameter on any authenticated API endpoint, in addition to the standard Authorization: Bearer header. URLs are recorded in reverse-proxy access logs, browser history, and HTTP Referer headers on outbound navigation, so any JWT passed this way can be harvested by anyone with access to those logs or by an external site the user subsequently visits. A leaked token grants the full privileges of the user it was issued to, until the token expires (default 8 hours, configur

Affected products

portainer — portainer

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.