{"id":"CVE-2026-115359","kind":"vulnerability","aliases":["CVE-2026-115359"],"related":[],"title":"OpenBao: role-scoped rate limits skipped for form-encoded requests","description":"OpenBao before 2.6.4 and 2.7.x before 2.7.1 contains a flaw in its rate limit quota subsystem where role resolution fails for requests with form-encoded bodies or forwarded certificates, so quota rules scoped to backend-specific roles are not enforced. Valid callers can repeatedly issue tokens without consuming the configured role-based rate limit budget.","summary":"OpenBao's rate limit quota subsystem fails to resolve the role for requests with form-encoded bodies or forwarded certificates, so role-scoped quota rules are not applied. A valid caller can repeatedly request tokens without using up the configured role-based rate limit budget.","severity":"medium","cvss":6.3,"epss":0.00187,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["kubernetes","openbao","package","self-hosted"],"not_affected_if":["default-config","no-role-quotas"],"how_to_check":"- Check the installed OpenBao version with `bao version`\n- Review whether role-based rate limit quotas are configured (quota rules scoped to a role)","fix":"- Upgrade OpenBao 2.6.x to `2.6.4` or later\n- Upgrade OpenBao 2.7.x to `2.7.1` or later","status":"open","published_at":"2026-10-22T19:17:42+00:00","first_seen_at":"2026-10-23T21:57:31+00:00","triaged_at":"2026-10-25T04:00:08+00:00","updated_at":"2026-10-25T04:00:08+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:00:08Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade OpenBao 2.6.x to `2.6.4` or later\n- Upgrade OpenBao 2.7.x to `2.7.1` or later","reach":"network","title":"OpenBao: role-scoped rate limits skipped for form-encoded requests","impact":"low","summary":"OpenBao's rate limit quota subsystem fails to resolve the role for requests with form-encoded bodies or forwarded certificates, so role-scoped quota rules are not applied. A valid caller can repeatedly request tokens without using up the configured role-based rate limit budget.","category":"package","nicknames":[],"who_cares":["openbao","self-hosted","kubernetes"],"confidence":0.7,"needs_auth":"yes","worst_case":"Valid callers exceed role-based rate limits when issuing tokens","analyst_note":"","how_to_check":"- Check the installed OpenBao version with `bao version`\n- Review whether role-based rate limit quotas are configured (quota rules scoped to a role)","needs_analyst":false,"not_affected_if":["default-config","no-role-quotas"],"who_is_affected":"Teams running OpenBao before 2.6.4 or 2.7.x before 2.7.1 that rely on role-scoped rate limit quotas to throttle token issuance. Deployments without role-scoped quotas are not exposed through this flaw, and the impact is limited to bypassing a throttle rather than gaining access.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000607,"input_tokens":3401,"output_tokens":534,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-115359':15A,18A '-2026':14A,17A '2.6.4':75C '2.7':77C '2.7.1':80C 'appli':54B 'backend':110C 'backend-specif':109C 'base':69B,128C 'bodi':42B,100C 'budget':72B,131C 'caller':57B,117C 'certif':45B,103C 'configur':66B,125C 'consum':123C 'contain':81C 'cve':13A,16A 'encod':11A,41B,99C 'enforc':115C 'fail':31B,93C 'flaw':83C 'form':10A,40B,98C 'form-encod':9A,39B,97C 'forward':44B,102C 'host':24B 'issu':120C 'kubernet':19B 'limit':6A,28B,71B,87C,130C 'openbao':1A,20B,25B,73C 'packag':21B 'quota':29B,50B,88C,105C 'rate':5A,27B,70B,86C,129C 'repeat':59B,119C 'request':12A,37B,60B,95C 'resolut':92C 'resolv':33B 'role':3A,35B,48B,68B,91C,112C,127C 'role-bas':67B,126C 'role-scop':2A,47B 'rule':51B,106C 'scope':4A,49B,107C 'self':23B 'self-host':22B 'skip':7A 'specif':111C 'subsystem':30B,89C 'token':61B,121C 'use':63B 'valid':56B,116C 'without':62B,122C 'x':78C","nicknames":[],"mitigations":[],"who_affected":"Teams running OpenBao before 2.6.4 or 2.7.x before 2.7.1 that rely on role-scoped rate limit quotas to throttle token issuance. Deployments without role-scoped quotas are not exposed through this flaw, and the impact is limited to bypassing a throttle rather than gaining access.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T19:17:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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-2026-115359","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115359","severity":null,"published_at":"2026-10-22T19:17:42+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-2026-115359","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115359","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"}