https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T05:16:05.548254+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-310027 EUVD-2026-310027 2026-10-06T05:16:05.595559+00:00 EUVD-2026-310027 https://cve.radiocsirt.org/vuln/fkie_cve-2026-42274 fkie_cve-2026-42274 2026-10-06T05:16:05.595604+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-3q34-rx83-r6mq GHSA-3q34-rx83-r6mq — Heimdall has an authorization bypass via path normalization mismatch 2026-10-06T05:16:05.595642+00:00

Affected: Go: github.com/dadrus/heimdall

### Summary

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](https://www.rfc-editor.org/rfc/rfc3986#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`).

### Details

This vulnerability can be exploited by an adversary if rule matching is performed using free (named or unnamed) wildcards without further constraints, as shown in the example snippets below.

```yaml id: rule-1 match: routes: - path: /user/** execute: # configured to require authentication and authorization # ... ```

```yaml id: rule-2 match: routes: - path: /public/** execute: # configured to allow anonymous access # ... ```

If an adversary sends a request to `/public/../user/whatever`, rule-2 will be matched and executed. The downstream service may, however, normalize the request path and interpret it as `/user/whatever`.

### Impact

Bypass of access control policies enforced by heimdall may lead to the following consequences:

* Access to or modification of data that should be restricted * Invocation of functionality that is expected to require authenti…