Decorator Order Executes Route BEFORE Auth Check?!
DECORATOR DISASTER! Apply bottom-to-top! Route runs BEFORE auth! Non-admin deletes 847 users! Cannot recover! $4.7M data loss! €2.7M GDPR fine! Security team FIRED!
#python #pythondisaster #decoratororder #authenticationbypass #routesecurity #productionbug #pythonshorts #pythonwtf #adminaccess #careerending #gdpr #flask
LM Challenge-Response Hash Always Sent in SMB Authentication
This vulnerability is an Authentication Bypass due to the consistent transmission of LM Challenge-Response hash during SMB authentication. The application failed to disable the LM hash in favor of the more secure NTLM hash, allowing attackers to perform offline attacks against weak LM hashes. The researcher discovered this by observing the network traffic during SMB authentication and identifying the presence of LM hashes, which should have been deprecated. The LM hash is susceptible to dictionary attacks, allowing attackers to crack passwords offline. The system's flawed configuration resulted in the consistent transmission of LM hashes, making it easier for attackers to perform offline attacks. This vulnerability could lead to account takeovers, unauthorized access, and data breaches. The researcher received $5,000 for this discovery. To prevent similar issues, it is crucial to disable the LM hash and ensure that only NTLM hashes are transmitted during SMB authentication. Key lesson: Always use stronger authentication mechanisms like NTLM over deprecated LM hashes. #BugBounty #Cybersecurity #WebSecurity #AuthenticationBypass #SMB
# LM Challenge-Response Hash Always Sent in SMB Authentication ## Summary The curl SMB client unconditionally computes and sends both the legacy LAN Manager (LM) and NT challenge-response hashes during SMB session setup. The LM hash is cryptographically broken — it splits the password into two 7-character halves, converts to uppercase, and uses DES with a fixed constant. Combined with the...
Breaking the Purchase Flow: When Step Order Assumptions Fail
This vulnerability is an Authentication Bypass in a purchase flow. The application assumed that certain steps were always completed in order (login first, then make a purchase), but this assumption was not validated. By exploiting a cross-site scripting (XSS) flaw in the login form, the researcher injected a payload to bypass the login process and proceed directly to the purchase step without authentication. The vulnerability allowed anyone to manipulate order details and potentially make unauthorized purchases using someone else's account. During testing, the researcher discovered that the application did not properly sanitize user input for XSS attacks. The impact was a significant security risk, allowing data breaches or fraudulent transactions. The bounty amount is undisclosed in the article. To prevent such vulnerabilities, always validate step order assumptions and enforce proper sanitization on user inputs during both enabled JavaScript and disabled states. Key lesson: Do not rely solely on input validation based on JavaScript or cookies for security decisions—always verify user interactions at multiple levels. #BugBounty #WebSecurity #AuthenticationBypass #XSS #Cybersecurity
Part 2 Outline: High-Impact Bugs Without Heavy Scanning
This article highlights a subtle vulnerability in applications that require JavaScript and cookies to function. By disabling these features, a researcher can potentially bypass critical functionality like login forms or sensitive pages. The root cause lies in the application's assumption that if JavaScript is enabled and cookies are present, user interactions are legitimate. During testing, the researcher discovered an input validation flaw where sanitization didn't occur on disabled JavaScript states, allowing for injection of malicious payloads. This led to unauthorized access and potential data breaches if sensitive information was exposed. The researcher received a substantial bounty but did not disclose the exact amount in the article. To prevent such vulnerabilities, it's essential to validate inputs even when JavaScript is disabled and enforce proper sanitization on user input. Key lesson: Never assume legitimate user interactions solely based on enabled JavaScript or present cookies #BugBounty #WebSecurity #InputValidation #AuthenticationBypass #XSS
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
#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
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