--- title: Full Disclosure: A Third (and Fourth) Azure Sign-In Log... description: A security researcher discloses two new Azure Entra ID sign-in log bypasses (GraphGoblin and a fourth unnamed bypass), bringing the total to four discovered... canonical: https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Full Disclosure: A Third (and Fourth) Azure Sign-In Log Bypass Found | daily.dev og:description: A security researcher discloses two new Azure Entra ID sign-in log bypasses (GraphGoblin and a fourth unnamed bypass), bringing the total to four discovered... og:url: https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm og:image: https://api.daily.dev/og/posts/6jqPOfnhM.png og:image:alt: Full Disclosure: A Third (and Fourth) Azure Sign-In Log Bypass Found og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Full Disclosure: A Third (and Fourth) Azure Sign-In Log Bypass Found **[Hacker News](https://daily.dev/sources/hn)** · 20 min read · 0 upvotes · 0 comments ## Summary A security researcher discloses two new Azure Entra ID sign-in log bypasses (GraphGoblin and a fourth unnamed bypass), bringing the total to four discovered since 2023. Both exploited SQL column overflow vulnerabilities: GraphGoblin repeated a valid OAuth scope value 35,000 times, while the fourth bypass used an oversized user-agent string (50,000 characters). Both returned full bearer tokens with no sign-in log entries generated. Microsoft fixed both but declined to classify them as 'Important' severity or award a bug bounty, despite the bypasses affecting the most critical security log in Azure. The post also provides KQL queries using Microsoft Graph Activity Logs to detect sign-in log bypass attempts by correlating SignInActivityId with UniqueTokenIdentifier across multiple log sources. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Hackers target Microsoft 365 accounts with 81 million login attempts](https://daily.dev/posts/hackers-target-microsoft-365-accounts-with-81-million-login-attempts-tnrut3eab) · BleepingComputer · 0 upvotes · 0 comments - [No single pane of glass: Anatomy of an Azure permission takeover](https://daily.dev/posts/no-single-pane-of-glass-anatomy-of-an-azure-permission-takeover-q7x1g2hf6) · Sysdig Blog · 0 upvotes · 0 comments - [Microsoft Graph API Attack Surface: OAuth Flows, Abused Endpoints, and What Defenders Miss](https://daily.dev/posts/microsoft-graph-api-attack-surface-oauth-flows-abused-endpoints-and-what-defenders-miss-rdgiqytop) · InfoSec Write-ups · 0 upvotes · 0 comments - [How to detect OAuth client ID spoofing in Microsoft Entra ID before account takeover](https://daily.dev/posts/how-to-detect-oauth-client-id-spoofing-in-microsoft-entra-id-before-account-takeover-xqk4ylbfr) · CSO Online · 0 upvotes · 0 comments --- Tags: [#microsoft](https://daily.dev/tags/microsoft), [#authentication](https://daily.dev/tags/authentication) [View this post on daily.dev](https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Full Disclosure: A Third (and Fourth) Azure Sign-In Log Bypass Found","url":"https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm"},"datePublished":"2026-03-20T05:52:11.657Z","dateModified":"2026-03-20T05:52:38.065Z","description":"A security researcher discloses two new Azure Entra ID sign-in log bypasses (GraphGoblin and a fourth unnamed bypass), bringing the total to four discovered...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b73ad4e186c66c66e0ae19a97da1d7c8?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b73ad4e186c66c66e0ae19a97da1d7c8?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hacker News","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/full-disclosure-a-third-and-fourth-azure-sign-in-log-bypass-found-6jqpofnhm","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"microsoft,authentication","timeRequired":"PT20M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Full Disclosure: A Third (and Fourth) Azure Sign-In Log Bypass Found"}]} ```