---
id: "CVE-2026-77800"
kind: "vulnerability"
aliases: ["CVE-2026-77800"]
title: "ManageEngine Key Manager Plus: SAML login bypass lets attackers sign in as others"
severity: "high"
cvss: 7.7
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "key-manager-plus", "manageengine", "saml", "self-hosted"]
not_affected_if: ["build-7151-or-later", "saml-not-enabled"]
published_at: "2026-11-03T05:18:52+00:00"
first_seen_at: "2026-11-03T05:48:53+00:00"
updated_at: "2026-11-03T05:49:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77800", "first_seen_at": "2026-11-03T05:48:53+00:00"}]
---

# ManageEngine Key Manager Plus: SAML login bypass lets attackers sign in as others

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.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Key Manager Plus build number against `7151`
- 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

## Timeline

- 2026-11-03T05:48:53+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-77800

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_