CVE-2026-42274

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs rule matching on the raw (non-normalized) request path, while downstream components may normalize dot-segments according to RFC 3986, Section 6.2.2.3. This discrepancy can result in heimdall authorizing a request for one path (e.g., /user/../admin, or URL-encoded variants such as /user/%2e%2e/admin or /user/%2e%2e%2fadmin. The latter would require the allow_encoded_slashes option to be set to on or no_decode.) while the downstream ultimately processes a different, normalized path (/admin). This issue has been patched in version 0.17.14.

CVSS

No CVSS.

References

Link	Resource
https://github.com/dadrus/heimdall/commit/b5dfa484b7a8c2ce6d8691c026f9da867719947a
https://github.com/dadrus/heimdall/pull/3209
https://github.com/dadrus/heimdall/releases/tag/v0.17.14
https://github.com/dadrus/heimdall/security/advisories/GHSA-3q34-rx83-r6mq

Configurations

No configuration.

History

26 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Heimdall es un servicio nativo de la nube de Proxy consciente de la identidad y de decisión de control de acceso. Antes de la versión 0.17.14, Heimdall realiza la coincidencia de reglas en la ruta de solicitud cruda (no normalizada), mientras que los componentes posteriores pueden normalizar los segmentos de puntos según la RFC 3986, Sección 6.2.2.3. Esta discrepancia puede resultar en que Heimdall autorice una solicitud para una ruta (por ejemplo, /user/.. / admin, o variantes codificadas en URL como /user/%2e%2e/admin o /user/%2e%2e%2fadmin. Esto último requeriría que la opción allow_encoded_slashes se establezca en ’on’ o ’no_decode’.) mientras que el componente posterior finalmente procesa una ruta diferente y normalizada (/admin). Este problema ha sido parcheado en la versión 0.17.14.

Information

Published : 2026-05-08 04:16

Updated : 2026-10-26 20:10

NVD link : CVE-2026-42274

Mitre link : CVE-2026-42274

CVE.ORG link : CVE-2026-42274

JSON object : View

Products Affected

No product.

CWE

CWE-35

Path Traversal: '.../...//'

CWE-436

Interpretation Conflict

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