{"id":"CVE-2026-77800","kind":"vulnerability","aliases":["CVE-2026-77800"],"related":[],"title":"ManageEngine Key Manager Plus: SAML login bypass lets attackers sign in as others","description":"ManageEngine Key Manager Plus versions before 7151 are vulnerable to a SAML authentication bypass that allows attackers to log in using SAML assertions meant for another service provider.","summary":"ManageEngine Key Manager Plus before build 7151 accepts SAML assertions that were issued for a different service provider. An attacker holding such an assertion can log in to Key Manager Plus without valid credentials for it.","severity":"high","cvss":7.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","key-manager-plus","manageengine","saml","self-hosted"],"not_affected_if":["build-7151-or-later","saml-not-enabled"],"how_to_check":"- Check the installed Key Manager Plus build number against `7151`\n- Review whether SAML single sign-on is enabled in the Key Manager Plus authentication settings","fix":"- Upgrade Key Manager Plus to build `7151` or later","status":"open","published_at":"2026-11-03T05:18:52+00:00","first_seen_at":"2026-11-03T05:48:53+00:00","triaged_at":"2026-11-03T05:49:50+00:00","updated_at":"2026-11-03T05:49:50+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-03T05:49:50Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Key Manager Plus to build `7151` or later","reach":"network","title":"ManageEngine Key Manager Plus: SAML login bypass lets attackers sign in as others","impact":"high","summary":"ManageEngine Key Manager Plus before build 7151 accepts SAML assertions that were issued for a different service provider. An attacker holding such an assertion can log in to Key Manager Plus without valid credentials for it.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["manageengine","key-manager-plus","saml","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"attacker logs in to the password and key manager as another user","analyst_note":"Confirm the affected build range and whether SAML must be enabled, using the ManageEngine advisory; NVD text alone gives only the version boundary.","how_to_check":"- Check the installed Key Manager Plus build number against `7151`\n- Review whether SAML single sign-on is enabled in the Key Manager Plus authentication settings","plain_action":"","needs_analyst":true,"not_affected_if":["build-7151-or-later","saml-not-enabled"],"who_is_affected":"Organizations running ManageEngine Key Manager Plus builds before 7151 that use SAML single sign-on are exposed. Installations without SAML login configured are unlikely to be affected, though the sources do not say that explicitly.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.00068,"input_tokens":4091,"output_tokens":542,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-77800':16A,19A '7151':36B,70C 'accept':37B 'allow':79C 'anoth':89C 'assert':39B,53B,86C 'attack':9A,49B,80C 'authent':76C 'build':35B 'bypass':7A,77C 'credenti':63B 'cve':14A,17A 'differ':45B 'hold':50B 'host':29B 'infrastructur':20B 'issu':42B 'key':2A,22B,31B,58B,65C 'key-manager-plus':21B 'let':8A 'log':55B,82C 'login':6A 'manag':3A,23B,32B,59B,66C 'manageengin':1A,25B,30B,64C 'meant':87C 'other':13A 'plus':4A,24B,33B,60B,67C 'provid':47B,91C 'saml':5A,26B,38B,75C,85C 'self':28B 'self-host':27B 'servic':46B,90C 'sign':10A 'use':84C 'valid':62B 'version':68C 'vulner':72C 'without':61B","nicknames":[],"mitigations":[],"who_affected":"Organizations running ManageEngine Key Manager Plus builds before 7151 that use SAML single sign-on are exposed. Installations without SAML login configured are unlikely to be affected, though the sources do not say that explicitly.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","keymanagerplus","manageengine","saml","selfhosted"],"first_public_at":"2026-11-03T05:18:52+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","cvss_by":"0fc0942c-577d-436f-ae8e-945763c79b02","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-77800","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77800","severity":null,"published_at":"2026-11-03T05:18:52+00:00","modified_at":"2026-11-03T05:18:52+00:00","first_seen_at":"2026-11-03T05:48:53+00:00","fetched_at":"2026-11-03T05:48:53+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"}