{"answers":{"affected":"3 open source packages ship an affected version, including github.com/gravitl/netmaker. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-38651 exists.","fix":"Upgrade github.com/gravitl/netmaker to 1.5.0 or later.","what":"CVE-2026-38651 is a high-severity authentication bypass vulnerability in n/a, published on 28 Apr 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-2026-38651 and fix it if it is affected.\n\nWhat it is: CVE-2026-38651 is a high-severity authentication bypass vulnerability in n/a, published on 28 Apr 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-2026-38651 exists.\n\nAffected packages and fixed versions:\n- github.com/gravitl/netmaker (Go): affected all versions; fixed in 1.5.0\n- github.com/gravitl/netmaker (Go): affected all versions; fixed in 1.5.0\n- github.com/gravitl/netmaker (Go): affected all versions; fixed in 1.5.0\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-2026-38651/ (Markdown: https://insights.sbomify.com/CVE-2026-38651/index.md)","id":"CVE-2026-38651","markdown":"https://insights.sbomify.com/CVE-2026-38651/index.md","name":"CVE-2026-38651","record":{"aliases":["GHSA-qpv2-rwc8-c993","GO-2026-5588"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Netmaker network overlay","requires_auth":"none","summary":"Attackers can forge JWTs to bypass authentication and impersonate hosts, gaining access to sensitive network information in Netmaker.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"netmaker","vendor":"netmaker"}],"cvss":{"score":8.2,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any host in the network, gaining access to sensitive information","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":"Netmaker does not verify JWT signatures for host tokens","id":"CVE-2026-38651","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2026-38669"},"packages":[{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gravitl/netmaker","purl":null,"source":"GHSA-qpv2-rwc8-c993"},{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gravitl/netmaker","purl":"pkg:golang/github.com/gravitl/netmaker","source":"GHSA-qpv2-rwc8-c993"},{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gravitl/netmaker","purl":"pkg:golang/github.com/gravitl/netmaker","source":"GO-2026-5588"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2026-38641"},"products":["n/a"],"published":"2026-04-28","related":[{"cvss_score":8.8,"headline":"Netmaker Privilige Escalation Vulnerability","id":"CVE-2023-32079","kev_date_added":null,"published":"2023-08-24"},{"cvss_score":8.8,"headline":"Netmaker vulnerable to Insufficient Granularity of Access Control","id":"CVE-2022-36110","kev_date_added":null,"published":"2022-09-09"},{"cvss_score":8.8,"headline":"Use of Hard-coded Cryptographic Key in gravitl/netmaker","id":"CVE-2022-0664","kev_date_added":null,"published":"2022-02-18"},{"cvss_score":8.7,"headline":"Netmaker: Denial of Service via Server Shutdown Endpoint","id":"CVE-2026-29771","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":7.5,"headline":"Netmaker has Hardcoded DNS Secret Key","id":"CVE-2023-32077","kev_date_added":null,"published":"2023-08-24"},{"cvss_score":7.5,"headline":"Netmaker IDOR Vulnerability Allows User to Update Other User's Password","id":"CVE-2023-32078","kev_date_added":null,"published":"2023-08-24"}],"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":"2026-04-28","vendors":["n/a"]},"summary":"Attackers can forge JWTs to bypass authentication and impersonate hosts, gaining access to sensitive network information in Netmaker.","url":"https://insights.sbomify.com/CVE-2026-38651/"}