{"id":"CVE-2026-115357","kind":"vulnerability","aliases":["CVE-2026-115357"],"related":[],"title":"OpenBao: missing response audit entries hide root token generation and rekey","description":"OpenBao before 2.6.4 and 2.7.x before 2.7.1 fails to write response audit entries for the unauthenticated sys/generate-root, sys/rekey, and sys/rekey-recovery-key endpoints when request audit logging succeeds but response audit logging fails. An attacker using these endpoints can complete root token generation or rekey operations without a corresponding response audit record, hindering forensic detection.","summary":"OpenBao before 2.6.4 and 2.7.x before 2.7.1 fails to write response audit records for the unauthenticated sys/generate-root, sys/rekey, and sys/rekey-recovery-key endpoints when response audit logging fails. An attacker can complete root token generation or rekey operations without a matching response audit record, which weakens forensic detection.","severity":"low","cvss":2.2,"epss":0.0021,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["openbao","package","secrets-management","self-hosted"],"not_affected_if":["no-audit-devices","patched-version"],"how_to_check":"- Check the OpenBao version with `bao version`; versions below `2.6.4` or in the `2.7.x` line below `2.7.1` are affected.\n- Review audit device configuration for response audit logging failures, such as `bao audit list`.","fix":"- Upgrade OpenBao to `2.6.4` or later on the 2.6 line, or `2.7.1` or later on the 2.7 line.","status":"open","published_at":"2026-10-22T19:17:41+00:00","first_seen_at":"2026-10-23T21:57:31+00:00","triaged_at":"2026-10-25T04:49:57+00:00","updated_at":"2026-10-25T04:49:57+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:49:57Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade OpenBao to `2.6.4` or later on the 2.6 line, or `2.7.1` or later on the 2.7 line.","reach":"network","title":"OpenBao: missing response audit entries hide root token generation and rekey","impact":"low","summary":"OpenBao before 2.6.4 and 2.7.x before 2.7.1 fails to write response audit records for the unauthenticated sys/generate-root, sys/rekey, and sys/rekey-recovery-key endpoints when response audit logging fails. An attacker can complete root token generation or rekey operations without a matching response audit record, which weakens forensic detection.","category":"package","nicknames":[],"who_cares":["openbao","self-hosted","secrets-management"],"confidence":0.7,"needs_auth":"no","worst_case":"root token generation goes unrecorded in audit logs","analyst_note":"","how_to_check":"- Check the OpenBao version with `bao version`; versions below `2.6.4` or in the `2.7.x` line below `2.7.1` are affected.\n- Review audit device configuration for response audit logging failures, such as `bao audit list`.","needs_analyst":false,"not_affected_if":["patched-version","no-audit-devices"],"who_is_affected":"Teams running self-hosted OpenBao with audit devices enabled, where sys/generate-root, sys/rekey, or sys/rekey-recovery-key are reachable. The impact is limited to forensic visibility of those operations when response audit logging fails. Teams on patched versions or without audit logging can skip it.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000627,"input_tokens":3404,"output_tokens":574,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-115357':14A,17A '-2026':13A,16A '2.6.4':28B,75C '2.7':30B,77C '2.7.1':33B,80C 'attack':54B,106C 'audit':4A,38B,50B,67B,85C,97C,102C,122C 'complet':56B,111C 'correspond':120C 'cve':12A,15A 'detect':72B,126C 'endpoint':47B,94C,109C 'entri':5A,86C 'fail':34B,52B,81C,104C 'forens':71B,125C 'generat':9A,59B,114C 'hide':6A 'hinder':124C 'host':25B 'log':51B,98C,103C 'manag':22B 'match':65B 'miss':2A 'openbao':1A,18B,26B,73C 'oper':62B,117C 'packag':19B 'record':39B,68B,123C 'rekey':11A,61B,116C 'request':96C 'respons':3A,37B,49B,66B,84C,101C,121C 'root':7A,57B,112C 'secret':21B 'secrets-manag':20B 'self':24B 'self-host':23B 'succeed':99C 'sys/generate-root':43B,90C 'sys/rekey':44B,91C 'sys/rekey-recovery-key':46B,93C 'token':8A,58B,113C 'unauthent':42B,89C 'use':107C 'weaken':70B 'without':63B,118C 'write':36B,83C 'x':31B,78C","nicknames":[],"mitigations":[],"who_affected":"Teams running self-hosted OpenBao with audit devices enabled, where sys/generate-root, sys/rekey, or sys/rekey-recovery-key are reachable. The impact is limited to forensic visibility of those operations when response audit logging fails. Teams on patched versions or without audit logging can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T19:17:41+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/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-2026-115357","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115357","severity":null,"published_at":"2026-10-22T19:17:41+00:00","modified_at":"2026-10-23T14:20:57+00:00","first_seen_at":"2026-10-23T21:57:31+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-115357","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115357","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-24T07:15:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}