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We began by creating a model with the community version to assess its capabilities. Once we confirmed that this tool met our needs, we opted for an enterprise license. Simply to benefit from tools that facilitate integration into our model and address specific requirements of our architecture in terms of security, data transformation, and authentication management.
Nicolas Gabetty
Senior Engineer / Coop Atlantique
CVE-2026-33814
CVE
High
· CVSS 7.5
Low ImpactExploiting this vulnerability requires an uncommon setup or configuration. Upgrading is still recommended when possible.
SETTINGS_MAX_FRAME_SIZE=0 frame. KrakenD acts as an HTTP/2 client
when backend connections use the HTTP/2 protocol. Deployments whose backends are
accessible only over trusted internal networks are at lower risk.Component
Go standard library (net/http)
Disclosed
May 11, 2026
CVSS Score
7.5
SETTINGS_MAX_FRAME_SIZE value of 0 from a server. A malicious or
compromised HTTP/2 backend server can exploit this to hang the KrakenD request
handler goroutine indefinitely, exhausting goroutine pool resources and causing
denial of service.Community Edition
2.13.5
addresses this advisory
Affected CE versions
>= 2.0, < 2.13.5
Enterprise Edition
2.13.3
addresses this advisory
Affected EE versions
>= 2.0, < 2.13.3
Upgrade to the addressed version or later to remediate this vulnerability.
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