The Logic Flaw That Leads to Total Control: Mastering Account Takeovers in 2026
This vulnerability falls under the Authentication Bypass class, specifically Logical Account Takeover. ZACK0X01's tutorial reveals that attackers can bypass multi-factor authentication (MFA) by exploiting subtle disconnects in authentication flows. The researcher manipulates responses and leverages Insecure Direct Object References (IDOR) to gain control of any user account. By observing patterns in error messages, the researcher found opportunities to intercept MFA codes or bypass MFA checks entirely. The critical severity (CVSS ~9.8) demonstrates the devastating impact: complete account takeover and unauthorized access to sensitive data. The tutorial offers actionable insights for finding this high-impact vulnerability class in web applications. Key lesson: Look beyond syntax errors, focus on business logic flaws to master account takeovers. #BugBounty #WebSecurity #AuthenticationBypass #IDOR #AccountTakeover
#AuthenticationBypass
#56 rank on PortSwigger Labs
This article showcases an Authentication Bypass vulnerability through a combination of Cross-Site Scripting (XSS) and Session ID manipulation. The application failed to properly sanitize input, allowing an attacker to inject JavaScript into a login page's form field using XSS. By setting the value of a hidden session token field to an arbitrary session ID, the researcher exploited a flawed authentication mechanism that relied on user-controlled session tokens without validating their origin. This resulted in unauthorized access and privilege escalation. The researcher was ranked 56th on PortSwigger Labs for this find. Fixing the issue requires proper input validation, using secure cookies, and token-based authentication. Key lesson: Never trust user-controlled data for security decisions—validate and sanitize all inputs. #BugBounty #Cybersecurity #WebSecurity #XSS #AuthenticationBypass
TryHackme Walkthrough — Overpass
The vulnerability discovered was an Authentication Bypass due to weak password hashing. The application used the MD5 algorithm, which is insecure and easily reversible, for password hashing. By analyzing leaked passwords from a previous data breach, the researcher found weak credentials that allowed them to guess the hash of the target user account (e.g., 'admin' => '5eb6fb193f2cc04e9bf03a8971b5955d'). Using Burp Suite's Intruder tool, they injected a payload to brute-force the login with the known hash. The application accepted the hashed password without verifying its integrity, leading to unauthorized access. This flaw could have resulted in sensitive data exposure and potential account takeovers. The researcher received a reward for reporting this issue. Proper remediation involves using strong password hashing algorithms such as BCrypt or Argon2. Key lesson: Always use secure hashing algorithms (e.g., BCrypt, Argon2) instead of insecure ones like MD5 to protect user credentials. #BugBounty #Cybersecurity #WebSecurity #AuthenticationBypass #PasswordHashing
https://seclak07.medium.com/tryhackme-walkthrough-overpass-838c1e204334?source=rss------bug_bounty-5
A critical flaw in a popular WordPress theme has fueled over 150,000 cyberattack attempts, hitting SMEs hard. Could your site be next? Learn what's behind the spike and how to protect yourself.
#wordpresssecurity
#jobmonster
#cyberattacks
#authenticationbypass
#smeprotection
🛑 CVE-2025-5947 (CVSS 9.8): Authentication Bypass in WordPress Service Finder
Attackers are exploiting this flaw to log in as any user, including admins.
The bug lies in the theme’s bundled booking plugin — improper cookie validation in service_finder_switch_back().
Over 13K attempts detected since August 1.
Update to v6.1 and review site activity now.
💬 How should WordPress improve its plugin vetting process to prevent these issues? Follow @technadu for critical threat intelligence updates.
#CyberSecurity #Infosec #WordPress #ThreatIntel #WebsiteSecurity #Vulnerability #WebDev #TechNadu #Hacking #AuthenticationBypass
A tiny flaw in the Service Finder theme could let hackers in—and it's easier to fix than you think. Discover practical steps like regular audits and multi-factor authentication that can lock your site down.
#wordpresssecurity
#authenticationbypass
#websitemitigation
#servicefindertheme
#cybersecuritytips
I just completed the Web Security Academy lab:
Authentication bypass via OAuth implicit flow
#AuthenticationBypass #WebAppSec #Cybersecurity
https://portswigger.net/web-security/oauth/lab-oauth-authentication-bypass-via-oauth-implicit-flow
High-severity vulnerability in Passwordstate credential manager. Patch now. https://arstechni.ca/ZPJM #authenticationbypass #passwordmanagers #vulnerabilities #Security #patches #Biz&IT
Passwordstate, a key tool for thousands of organizations, now faces a critical flaw that lets attackers bypass MFA with a clever URL trick. Could your sensitive data be at risk? Read on to learn why immediate updates might be a must.
#passwordstate
#cybersecurity
#vulnerability
#infosec
#authenticationbypass
Fortinet's FortiWeb has a hidden flaw: a cookie glitch that lets attackers forge admin access. How could a tiny parameter turn into a massive security risk? Dive into the details and learn how to protect your system now.
#fortimajeure
#fortiweb
#cybersecurity
#vulnerability
#authenticationbypass
HPE's latest flaw lets attackers bypass authentication without a key—imagine a digital backdoor in your backup system. Can your data stand up to this near-perfect storm?
#hpe
#authenticationbypass
#cybersecurity
#vulnerability
#infosec
FortiOS Authentication Bypass Vulnerability Lets Attackers Take Full Control of Device
https://cybersecuritynews.com/fortios-authentication-bypass-vulnerability/
#Infosec #Security #Cybersecurity #CeptBiro #FortiOS #AuthenticationBypass #Vulnerability #FullControlOfDevice
A critical flaw in server management software now lets hackers bypass key security measures – could this vulnerability leave your servers wide open to attack? Find out how a new discovery is shaking up cybersecurity.
#cve202454085
#bmcsecurity
#servervulnerability
#authenticationbypass
#cybersecurity
ASUS routers with AiCloud can let hackers in with zero authentication—an urgent reminder to update your firmware and lock down your network. Could your router be the next target?
#asusrouters
#authenticationbypass
#networksecurity
#iotsecurity
#cyberthreats
Understanding the CrushFTP Authentication Bypass Vulnerability: A Critical Cybersecurity Threat
#crushftp
#authenticationbypass
#cybersecuritythreat
#cve20252825
#infosec
Understanding the VMware Tools Authentication Bypass Vulnerability
https://thedefendopsdiaries.com/understanding-the-vmware-tools-authentication-bypass-vulnerability/
#vmware
#cybersecurity
#vulnerability
#infosec
#authenticationbypass
GitLab's Critical Vulnerability Fixes: What You Need to Know
https://thedefendopsdiaries.com/gitlabs-critical-vulnerability-fixes-what-you-need-to-know/
#gitlab
#cybersecurity
#vulnerability
#saml
#authenticationbypass
Krytyczny błąd 0day w Fortigate. Jest w trakcie exploitacji, przejmują dostępy do VPNa w firmach.
Luka umożliwia pełne przejęcie urządzenia z poziomu Internetu. Tj. zdobycie uprawnień super-admina. Podatność jest wykorzystywana w realnych atakach, najprawdopodobniej od okolic grudnia 2024. Nie wiadomo dokładnie jaka grupa odpowiedzialna jest za ataki. W ramach ataków wykonywane są takie operacje jak: Podatne są FortiOS (7.0.0 do 7.0.16) oraz FortiProxy (linia 7.0.x...
#WBiegu #0Day #AuthBypass #AuthenticationBypass #Fortigate #VPN
SonicWall Patches Authentication Bypass Vulnerabilities in Firewalls
https://www.securityweek.com/sonicwall-patches-authentication-bypass-vulnerabilities-in-firewalls/
#Infosec #Security #Cybersecurity #CeptBiro #SonicWall #AuthenticationBypass #Vulnerabilities #Firewalls
Critical GitHub Enterprise Server Flaw Allows Authentication Bypass
Date: May 21, 2024
CVE: [[CVE-2024-4985]]
Vulnerability Type: Improper Authentication
CWE: [[CWE-287]]
Sources: Cyber Security News, SecurityWeek, The Hacker News
Issue Summary
A critical vulnerability in GitHub Enterprise Server, identified as CVE-2024-4985, was discovered that allows attackers to bypass authentication. This flaw, found in versions 3.9.14, 3.10.11, 3.11.9, and 3.12.3, permits unauthorized access to repositories and sensitive data by exploiting a weakness in the SAML SSO authentication process.
Technical Key Findings
The vulnerability arises from a logic error in the SAML SSO authentication process, where the server fails to verify the validity of digital signatures on SAML responses properly. Attackers can craft SAML assertions with any certificate, which the server incorrectly accepts, allowing the spoofing of user identities, including admin accounts.
Vulnerable Products
- GitHub Enterprise Server versions 3.9.14
- GitHub Enterprise Server versions 3.10.11
- GitHub Enterprise Server versions 3.11.9
- GitHub Enterprise Server versions 3.12.3
Impact Assessment
Exploitation of this vulnerability could lead to unauthorized access to private repositories, sensitive data, and administrative controls. This can result in data breaches, code tampering, and potential intellectual property theft.
Patches or Workaround
GitHub has released patched versions (3.9.15, 3.10.12, 3.11.10, and 3.12.4) to address this issue. As an interim measure, enabling SAML certificate pinning can mitigate the risk. Additionally, auditing access logs for suspicious activity and rotating credentials is advised.
Tags
#GitHub #CVE20244985 #SAML #AuthenticationBypass #SecurityFlaw #EnterpriseSecurity #DataBreach #PatchUpdate #CyberSecurity