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-2026-12357

Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The specif...

CVE-2026-12357 Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability

Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The specif...

CVE-2026-12357

The CVE-2026-12357 entry concerns Heimdall Data Database Proxy. The connected PT-2026-64200 source describes a CRLF injection in the generateFileContent() function, leading to remote code execution with root privileges. The vulnerability allows remote authenticated attackers to execute arbitrary ...

EUVD-2026-50487

Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The specif...

PT-2026-64200

Name of the Vulnerable Software and Affected Versions Heimdall Data Database Proxy affected versions not specified Description Remote authenticated attackers can execute arbitrary code with root privileges on affected installations. The issue stems from the lack of proper neutralization of CRLF...

GO-2026-5200 Heimdall: Case-sensitive host matching may lead to policy bypass in github.com/dadrus/heimdall

Heimdall: Case-sensitive host matching may lead to policy bypass in github.com/dadrus/heimdall...

GO-2026-5097 Heimdall has an authorization bypass via path normalization mismatch in github.com/dadrus/heimdall

Heimdall has an authorization bypass via path normalization mismatch in github.com/dadrus/heimdall...

GO-2026-5125 Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall

Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall...

GO-2026-5108 Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation in github.com/dadrus/heimdall

Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation in github.com/dadrus/heimdall...

Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode

Summary When Heimdall operates in proxy mode, it constructs the Forwarded HTTP header after executing the matched rule pipeline by inserting the incoming request's Host header value directly into the header string without sanitizing commas or semicolons. This allows an attacker to inject addition...

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-2026-42273

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-2026-42272

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

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-2026-42274

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-2026-42273 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

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...