{"answers":{"affected":"3 open source packages ship an affected version, including github.com/dadrus/heimdall. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32811 exists.","fix":"Upgrade github.com/dadrus/heimdall to 0.17.11 or later.","what":"CVE-2026-32811 is a high-severity authentication bypass vulnerability in dadrus heimdall, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-32811 and fix it if it is affected.\n\nWhat it is: CVE-2026-32811 is a high-severity authentication bypass vulnerability in dadrus heimdall, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32811 exists.\n\nAffected packages and fixed versions:\n- github.com/dadrus/heimdall (Go): affected from 0.7.0-alpha; fixed in 0.17.11\n- github.com/dadrus/heimdall (Go): affected from 0.7.0-alpha; fixed in 0.17.11\n- github.com/dadrus/heimdall (Go): affected from 0.7.0-alpha; fixed in 0.17.11\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-32811/ (Markdown: https://insights.sbomify.com/CVE-2026-32811/index.md)","id":"CVE-2026-32811","markdown":"https://insights.sbomify.com/CVE-2026-32811/index.md","name":"CVE-2026-32811","record":{"aliases":["GHSA-r8x2-fhmf-6mxp","GO-2026-4742"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Identity Aware Proxy","requires_auth":"none","summary":"Attackers can bypass access control rules in Heimdall by exploiting URL encoding issues, potentially gaining unauthorized access if insecure defaults are enabled.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"heimdall","vendor":"dadrus"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"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 the requested URL into parts, and sends the parts individually to Heimdall. Although query and path are present in the API, the query field is documented to be always empty and the URL query is included in the path field. The implementation uses go's url library to reconstruct the url which automatically encodes special characters in the path. As a consequence, a parameter like /mypath?foo=bar to Path is escaped into /mypath%3Ffoo=bar. Subsequently, a rule matching /mypath no longer matches and is bypassed. The issue can only lead to unintended access if Heimdall is configured with an \"allow all\" default rule. Since v0.16.0, Heimdall enforces secure defaults and refuses to start with such a configuration unless this enforcement is explicitly disabled, e.g. via --insecure-skip-secure-default-rule-enforcement or the broader --insecure flag. This issue has been fixed in version 0.17.11.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Heimdall: Path received via Envoy gRPC corrupted when containing query string","id":"CVE-2026-32811","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Admidio Vulnerable to SSRF and Local File Read via Unrestricted URL Fetch in SSO Metadata Endpoint","id":"CVE-2026-32812"},"packages":[{"ecosystem":"Go","fixed":["0.17.11"],"introduced":["0.7.0-alpha"],"last_affected":[],"package":"github.com/dadrus/heimdall","purl":null,"source":"GHSA-r8x2-fhmf-6mxp"},{"ecosystem":"Go","fixed":["0.17.11"],"introduced":["0.7.0-alpha"],"last_affected":[],"package":"github.com/dadrus/heimdall","purl":"pkg:golang/github.com/dadrus/heimdall","source":"GHSA-r8x2-fhmf-6mxp"},{"ecosystem":"Go","fixed":["0.17.11"],"introduced":["0.7.0-alpha"],"last_affected":[],"package":"github.com/dadrus/heimdall","purl":"pkg:golang/github.com/dadrus/heimdall","source":"GO-2026-4742"}],"prev":{"headline":"Halloy has insecure file permissions on credential files","id":"CVE-2026-32810"},"products":["heimdall"],"published":"2026-03-20","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-21","vendors":["dadrus"]},"summary":"Attackers can bypass access control rules in Heimdall by exploiting URL encoding issues, potentially gaining unauthorized access if insecure defaults are enabled.","url":"https://insights.sbomify.com/CVE-2026-32811/"}