# github.com/dadrus/heimdall (Go) vulnerabilities Source: https://junglewise.ai/threats/technologies/github-com-dadrus-heimdall Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/github-com-dadrus-heimdall.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 6 vulnerabilities in github.com/dadrus/heimdall (Go): 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-57210, was published on 23 October 2026. 2 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 2 - Last 90 days: 2 - All time: 6 (0 critical, 0 exploited in the wild) ## About github.com/dadrus/heimdall (Go) Go-based API gateway and identity and access proxy. ## Latest github.com/dadrus/heimdall (Go) vulnerabilities - [CVE-2026-57210: Heimdall IP spoofing via unvalidated forwarding headers](https://junglewise.ai/threats/cve-2026-57210-heimdall-ip-spoofing-via-unvalidated-forwarding-headers) (medium, CVSS 4, published 23 Oct 2026) - [CVE-2026-57209: Heimdall Forwarded header injection in proxy mode](https://junglewise.ai/threats/cve-2026-57209-heimdall-forwarded-header-injection-via-unsanitized-host-header) (medium, CVSS 4, published 23 Oct 2026) - [CVE-2026-42274: dadrus Heimdall authorization bypass via path normalization mismatch](https://junglewise.ai/threats/cve-2026-42274-dadrus-heimdall-authorization-bypass-via-path-normalization) (high, CVSS 4, published 8 May 2026) - [CVE-2026-42273: Dadrus Heimdall case-sensitive host matching policy bypass](https://junglewise.ai/threats/cve-2026-42273-dadrus-heimdall-case-sensitive-host-matching-policy-bypass) (high, CVSS 4, published 8 May 2026) - [CVE-2026-42272: dadrus Heimdall authorization bypass via case-sensitive URL encoding](https://junglewise.ai/threats/cve-2026-42272-dadrus-heimdall-authorization-bypass-via-case-sensitive-url) (high, CVSS 4, published 8 May 2026) - [CVE-2026-32811: GO-2026-4742 - Heimdall: Path received via Envoy gRPC corrupted when containing query string in github.com/dadrus/heimdall](https://junglewise.ai/threats/cve-2026-32811-heimdall-path-received-via-envoy-grpc-corrupted-when-containing) (low, CVSS 3.1, published 23 Mar 2026) ## Most severe github.com/dadrus/heimdall (Go) vulnerabilities - [CVE-2026-42272: dadrus Heimdall authorization bypass via case-sensitive URL encoding](https://junglewise.ai/threats/cve-2026-42272-dadrus-heimdall-authorization-bypass-via-case-sensitive-url) (high, CVSS 4, published 8 May 2026) - [CVE-2026-42274: dadrus Heimdall authorization bypass via path normalization mismatch](https://junglewise.ai/threats/cve-2026-42274-dadrus-heimdall-authorization-bypass-via-path-normalization) (high, CVSS 4, published 8 May 2026) - [CVE-2026-42273: Dadrus Heimdall case-sensitive host matching policy bypass](https://junglewise.ai/threats/cve-2026-42273-dadrus-heimdall-case-sensitive-host-matching-policy-bypass) (high, CVSS 4, published 8 May 2026) - [CVE-2026-57210: Heimdall IP spoofing via unvalidated forwarding headers](https://junglewise.ai/threats/cve-2026-57210-heimdall-ip-spoofing-via-unvalidated-forwarding-headers) (medium, CVSS 4, published 23 Oct 2026) - [CVE-2026-57209: Heimdall Forwarded header injection in proxy mode](https://junglewise.ai/threats/cve-2026-57209-heimdall-forwarded-header-injection-via-unsanitized-host-header) (medium, CVSS 4, published 23 Oct 2026) - [CVE-2026-32811: GO-2026-4742 - Heimdall: Path received via Envoy gRPC corrupted when containing query string in github.com/dadrus/heimdall](https://junglewise.ai/threats/cve-2026-32811-heimdall-path-received-via-envoy-grpc-corrupted-when-containing) (low, CVSS 3.1, published 23 Mar 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 2 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Go technologies - [github.com/mattermost/mattermost-server (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server): 297 vulnerabilities - [github.com/mattermost/mattermost-server/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6): 222 vulnerabilities - [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities - [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities - [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities - [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities - [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities - [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities - [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities - [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities - [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities - [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "github.com/dadrus/heimdall (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-dadrus-heimdall, 13 November 2026.