{"affected":[{"defaultStatus":"unaffected","product":"BuildPiper","source":"CNA: VulnCheck","vendor":"OpsTree Solutions","versions":[{"lessThan":"2.7.0","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-127077","cwes":["CWE-862"],"description":"OpsTree BuildPiper before 2.7.0 contains an authorization bypass vulnerability that allows authenticated users to create environments on unassigned Kubernetes clusters by tampering with cluster_id and namespaces values. Attackers can modify requests to POST /api/v1/project/{project_id}/env/ to target another project's cluster, then trigger builds and deployments into it, bypassing project isolation.","epss":{"date":"2026-11-13","percentile":0.31225,"score":0.00369},"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://gist.github.com/neelkotnis/e6ba937a2ea3f06fc0a79bd6193e4574"}],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},{"score":7.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"}],"modifiedAt":1794594845192,"publishedAt":1794562464783,"references":[{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://gist.github.com/neelkotnis/e6ba937a2ea3f06fc0a79bd6193e4574"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://www.buildpiper.io/"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-authorization-bypass-via-environment-creation-api"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://gist.github.com/neelkotnis/e6ba937a2ea3f06fc0a79bd6193e4574"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.buildpiper.io/"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-authorization-bypass-via-environment-creation-api"}],"remediation":[],"revision":"6b5bdc8a4daba4a4cec1db2fc804740578c4cd86e7d0a4839476b2667509d019","sources":[{"modifiedAt":1794594845192,"name":"CNA: VulnCheck","retrievedAt":1794597899668,"url":"https://www.cve.org/CVERecord?id=CVE-2026-127077"},{"modifiedAt":1794584724843,"name":"NVD","retrievedAt":1794593945071,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127077"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794597921613,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-127077"}],"ssvc":{"assessedAt":1794594822611,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"OpsTree BuildPiper before 2.7.0 Authorization Bypass via Environment Creation API","updatedAt":1794597921613}