{"id":"CVE-2026-44592","state":"PUBLISHED","title":"Gradient: Unauthenticated worker on /proto → arbitrary NAR write / cache poisoning","description":"Gradient is a nix-based continuous integration system. In 1.1.0, when GRADIENT_DISCOVERABLE=true (the default, and the NixOS module default), anyone who can reach /proto can register as a worker without any credentials by sending a fresh, never-registered worker UUID. The resulting session has PeerAuth::Open, i.e. it sees jobs from every organisation, and can immediately NarPush/NarUploaded arbitrary store paths into nar_storage and the cached_path table. This vulnerability is fixed in 1.1.1.","publishedAt":"2026-05-14T18:39:59.824Z","updatedAt":"2026-05-16T00:50:50.162Z","severity":{"score":9.4,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["wavelens gradient"],"affected":[{"vendor":"wavelens","product":"gradient","versions":[{"version":"1.1.0","status":"affected"}]}],"references":["https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2"],"weaknesses":["CWE-306","CWE-345","CWE-862"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44592.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44592","state":"PUBLISHED","datePublished":"2026-05-14T18:39:59.824Z","dateUpdated":"2026-05-16T00:50:50.162Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T21:49:12.425Z"},"containers":{"cna":{"title":"Gradient: Unauthenticated worker on /proto → arbitrary NAR write / cache poisoning","descriptions":[{"lang":"en","value":"Gradient is a nix-based continuous integration system. In 1.1.0, when GRADIENT_DISCOVERABLE=true (the default, and the NixOS module default), anyone who can reach /proto can register as a worker without any credentials by sending a fresh, never-registered worker UUID. The resulting session has PeerAuth::Open, i.e. it sees jobs from every organisation, and can immediately NarPush/NarUploaded arbitrary store paths into nar_storage and the cached_path table. This vulnerability is fixed in 1.1.1."}],"affected":[{"vendor":"wavelens","product":"gradient","versions":[{"version":"1.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2","name":"https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.4,"baseSeverity":"CRITICAL","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-14T18:39:59.824Z"},"source":{"advisory":"GHSA-49w6-gf3p-96m2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-16T00:50:40.449652Z","id":"CVE-2026-44592","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-16T00:50:50.162Z"}}]}}}