Heimdall Application Dashboard < 2.7.3 - Reflected XSS

LinuxServer.io Heimdall 2.7.3 contains a stored XSS caused by improper sanitization of the "q" parameter, letting remote attackers execute scripts, exploit requires crafted input. id: CVE-2025-54597 info: name: Heimdall Application Dashboard 2.7.3 - Reflected XSS author: 0xAkoko severity: medium...

CVE-2026-42273

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-2026-42274

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 ca...

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-2026-42274

CVE-2026-42274 affects Heimdall (cloud-native Identity Aware Proxy and Access Control Decision service). Before v0.17.14, it matches rules on raw, non-normalized request paths while downstream components normalize dot-segments per RFC 3986, potentially authorizing requests whose normalized path d...

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 ca...

CVE-2026-42274 Heimdall: Authorization bypass via path normalization mismatch

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 ca...

CVE-2026-42274 Heimdall: Authorization bypass via path normalization mismatch

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 ca...

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-2026-42273 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...

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-2026-42272

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...

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...

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 handling of URL-encoded slashes in a case-sensitive manner. URL-encoded slashes are defined as...

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...

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...