{"id":"CVE-2026-127076","kind":"vulnerability","aliases":["CVE-2026-127076"],"related":[],"title":"OpsTree BuildPiper: authenticated users can build other projects' private Git repos","description":"OpsTree BuildPiper before 2.7.0 contains a broken access control vulnerability that allows authenticated users to list and build from Git repositories restricted to other projects. Attackers can enumerate repositories via GET /api/v1/git_repo/?all=true and submit any git_repo_id to the ci endpoint, cloning other projects' source code, manifests, and committed secrets.","summary":"OpsTree BuildPiper before 2.7.0 has a broken access control flaw that lets any logged-in user list Git repositories belonging to other projects. An attacker can then trigger builds from those repositories and read their source code, manifests and committed secrets.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["buildpiper","ci","other","self-hosted"],"not_affected_if":["single-user-instance","version-2.7.0-or-later"],"how_to_check":"- Confirm the BuildPiper version in use; versions before `2.7.0` are affected.\n- Check whether user accounts that are not members of every project can call `GET /api/v1/git_repo/?all=true`.","fix":"- OpsTree BuildPiper: `2.7.0` or later, per the advisory description.","status":"open","published_at":"2026-11-13T10:18:03+00:00","first_seen_at":"2026-11-13T10:47:28+00:00","triaged_at":"2026-11-13T10:52:51+00:00","updated_at":"2026-11-13T10:52:51+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-13T10:52:51Z","model":"claude-haiku-5-5","output":{"fix":"- OpsTree BuildPiper: `2.7.0` or later, per the advisory description.","reach":"network","title":"OpsTree BuildPiper: authenticated users can build other projects' private Git repos","impact":"high","summary":"OpsTree BuildPiper before 2.7.0 has a broken access control flaw that lets any logged-in user list Git repositories belonging to other projects. An attacker can then trigger builds from those repositories and read their source code, manifests and committed secrets.","audience":"businesses","category":"other","nicknames":[],"who_cares":["buildpiper","self-hosted","ci"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"Source code and committed secrets from other projects readable by any user","analyst_note":"Confirm the exact affected range and whether the fixed 2.7.0 release is the only fix; check the NVD and vendor advisory pages.","how_to_check":"- Confirm the BuildPiper version in use; versions before `2.7.0` are affected.\n- Check whether user accounts that are not members of every project can call `GET /api/v1/git_repo/?all=true`.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["version-2.7.0-or-later","single-user-instance"],"who_is_affected":"Teams that run a self-hosted BuildPiper instance with more than one project and more than one user account. A single-project setup where every user may see every repository has less exposure, but the flaw still lets any authenticated user reach repositories they should not. Instances on `2.7.0` or later are not affected.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000759,"input_tokens":4604,"output_tokens":598,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-127076':14A,17A '-2026':13A,16A '/api/v1/git_repo':97C '2.7.0':27B,69C 'access':31B,73C 'allow':77C 'attack':49B,91C 'authent':3A,78C 'belong':44B 'broken':30B,72C 'build':6A,53B,83C 'buildpip':2A,18B,25B,67C 'ci':19B,108C 'clone':110C 'code':61B,114C 'commit':64B,117C 'contain':70C 'control':32B,74C 'cve':12A,15A 'endpoint':109C 'enumer':93C 'flaw':33B 'get':96C 'git':10A,42B,85C,103C 'host':23B 'id':105C 'let':35B 'list':41B,81C 'log':38B 'logged-in':37B 'manifest':62B,115C 'opstre':1A,24B,66C 'privat':9A 'project':8A,47B,90C,112C 'read':58B 'repo':11A,104C 'repositori':43B,56B,86C,94C 'restrict':87C 'secret':65B,118C 'self':22B 'self-host':21B 'sourc':60B,113C 'submit':101C 'trigger':52B 'true':99C 'user':4A,40B,79C 'via':95C 'vulner':75C","nicknames":[],"mitigations":[],"who_affected":"Teams that run a self-hosted BuildPiper instance with more than one project and more than one user account. A single-project setup where every user may see every repository has less exposure, but the flaw still lets any authenticated user reach repositories they should not. Instances on `2.7.0` or later are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["buildpiper","ci","high","other","selfhosted"],"campaign_type":null,"search_a":"'-127076':14A,17A '-2026':13A,16A 'authent':3A 'build':6A 'buildpip':2A 'cve':12A,15A 'git':10A 'opstre':1A 'privat':9A 'project':8A 'repo':11A 'user':4A","search_b":"'2.7.0':27B 'access':31B 'attack':49B 'belong':44B 'broken':30B 'build':53B 'buildpip':18B,25B 'ci':19B 'code':61B 'commit':64B 'control':32B 'flaw':33B 'git':42B 'host':23B 'let':35B 'list':41B 'log':38B 'logged-in':37B 'manifest':62B 'opstre':24B 'project':47B 'read':58B 'repositori':43B,56B 'secret':65B 'self':22B 'self-host':21B 'sourc':60B 'trigger':52B 'user':40B","search_c":"'/api/v1/git_repo':97C '2.7.0':69C 'access':73C 'allow':77C 'attack':91C 'authent':78C 'broken':72C 'build':83C 'buildpip':67C 'ci':108C 'clone':110C 'code':114C 'commit':117C 'contain':70C 'control':74C 'endpoint':109C 'enumer':93C 'get':96C 'git':85C,103C 'id':105C 'list':81C 'manifest':115C 'opstre':66C 'project':90C,112C 'repo':104C 'repositori':86C,94C 'restrict':87C 'secret':118C 'sourc':113C 'submit':101C 'true':99C 'user':79C 'via':95C 'vulner':75C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-13T10:18:03+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-127076","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127076","severity":null,"published_at":"2026-11-13T10:18:03+00:00","modified_at":"2026-11-13T10:18:03+00:00","first_seen_at":"2026-11-13T10:47:28+00:00","fetched_at":"2026-11-13T10:47:28+00:00","note":null}],"documents":[{"id":145280,"url":"https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-broken-access-control-via-git-repo-api","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}