EUVD-2026-28509

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs host matching in a case-sensitive manner, while HTTP hostnames are case-insensitive. This discrepancy can result in heimdall failing to match a rule for a request host...

CVE-2026-42273

CVE-2026-42273 affects Heimdall (cloud native Identity Aware Proxy and Access Control Decision service). Prior to version 0.17.14, host matching is case-sensitive while HTTP hostnames are case-insensitive, which can cause a request to be classified differently than intended and potentially bypass...

CVE-2026-42273 Heimdall: Case-sensitive host matching may lead to policy bypass

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs host matching in a case-sensitive manner, while HTTP hostnames are case-insensitive. This discrepancy can result in heimdall failing to match a rule for a request host...

CVE-2026-42272 Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes %2F in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent %2f is not recognized...

CVE-2026-42272

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes %2F in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent %2f is not recognized...

CVE-2026-42272 Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes %2F in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent %2f is not recognized...

CVE-2026-42272

CVE-2026-42272 affects Heimdall, a cloud-native Identity Aware Proxy/Access Control service. Before v0.17.14, it treated URL-encoded slashes (%2F) as case-sensitive while percent-encodings must be case-insensitive, causing %2f to be ignored when allow_encoded_slashes is off (default). This discre...

CVE-2026-42272 Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes %2F in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent %2f is not recognized...

Heimdall 安全漏洞

Heimdall is an open-source identity recognition proxy and access control decision-making service developed by dadrus for cloud-native applications. Versions of Heimdall prior to 0.17.14 contained security vulnerabilities. These vulnerabilities stemmed from the use of hostname matching in a...

Heimdall 安全漏洞

Heimdall is an open-source application panel and launcher developed by LinuxServer.io. Versions of Heimdall prior to 0.17.14 contained security vulnerabilities. These vulnerabilities stemmed from the use of the original request path for rule matching. Downstream components might normalize the que...

Heimdall 安全漏洞

Heimdall is an open-source application panel and launcher developed by LinuxServer.io. Versions of Heimdall prior to 0.17.14 contained security vulnerabilities. These vulnerabilities stemmed from the handling of URL-encoded slashes in a case-sensitive manner. URL-encoded slashes are defined as...

Interpretation Conflict

Overview Affected versions of this package are vulnerable to Interpretation Conflict via a mismatch in path normalization between components. An attacker can gain unauthorized access to restricted resources or perform actions without proper authentication by crafting requests with specially...

Interpretation Conflict

Overview Affected versions of this package are vulnerable to Interpretation Conflict via a mismatch in path normalization between components. An attacker can gain unauthorized access to restricted resources or perform actions without proper authentication by crafting requests with specially...

GHSA-3Q34-RX83-R6MQ Heimdall has an authorization bypass via path normalization mismatch

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. This discrepancy can result in heimdall authorizing a request for one path e.g., /user/../admin, or URL-encoded variants...

Heimdall: Case-sensitive host matching may lead to policy bypass

Summary Heimdall performs host matching in a case-sensitive manner, while HTTP hostnames are case-insensitive. This discrepancy can result in heimdall failing to match a rule for a request host that differs only in letter casing, potentially causing the request to be classified differently than...

PT-2026-37187

Name of the Vulnerable Software and Affected Versions Heimdall versions prior to 0.17.14 Description Heimdall performs host matching in a case-sensitive manner, which conflicts with the case-insensitive nature of HTTP hostnames. This discrepancy allows a request host that differs only in letter...

PT-2026-37188

Name of the Vulnerable Software and Affected Versions Heimdall versions prior to 0.17.14 Description Heimdall performs rule matching on the raw request path, whereas downstream components may normalize dot-segments according to RFC 3986. This discrepancy allows for the authorization of a request...

PT-2026-37186

Name of the Vulnerable Software and Affected Versions Heimdall versions prior to 0.17.14 Description Heimdall handles URL-encoded slashes %2F in a case-sensitive manner, whereas percent-encoding is defined as case-insensitive. When the allow encoded slashes variable is set to off the default...

Heimdall - Host Header Injection & Open Redirect

LinuxServer.io Heimdall 2.6.3-ls307 contains a host header injection caused by improper validation of user-supplied HTTP headers X-Forwarded-Host and Referer, letting unauthenticated remote attackers perform host header injection and open redirect attacks, exploit requires no special privileges...

SUSE CVE-2026-32811

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...