authentication-bypass
Safeguard articles tagged "authentication-bypass" — guides, analysis, and best practices for software supply chain and application security.
25 articles
The Patch That Wasn't: CVE-2026-18577 and the Incomplete-Fix Problem
N-able patched an authentication bypass in N-central. Attackers found what the patch missed and used it as a zero-day, pivoting into Microsoft 365 and Okta. Incomplete fixes are their own bug class.
Authentication bypass vulnerabilities explained
Authentication bypass flaws let attackers skip login entirely. See how CVE-2022-40684, CVE-2023-22515, and CVE-2021-40539 were exploited and prevented.
JWT algorithm confusion / none-algorithm bypass explained
How attackers forge JWTs via RS256/HS256 key confusion and the alg:none bypass, with real CVEs, detection steps, and defenses.
TeamCity Authentication Bypass Exploited by Nation-State ...
A critical TeamCity authentication bypass, CVE-2023-42793, let APT29 and North Korean hackers seize build servers for supply chain attacks.
TeamCity Authentication Bypass Enabling Admin Account Cre...
CVE-2024-27198 lets unauthenticated attackers bypass TeamCity login and create admin accounts, with active exploitation and ransomware activity observed.
SaltStack Authentication Bypass Behind Mass Salt-Master E...
CVE-2020-11651 let unauthenticated attackers hijack Salt masters, triggering mass exploitation within days of disclosure. Here is what happened and how to fix it.
CVE-2023-44794: The Sa-Token Authentication Bypass Explained
A path-normalization mismatch lets attackers bypass route authentication in Dromara Sa-Token. Here is how CVE-2023-44794 works and how to fix it.
SAML SSO vulnerabilities: signature wrapping and assertion replay explained
A 2024 ruby-saml flaw (CVE-2024-45409, CVSS 9.8) let attackers forge SAML assertions and log in as any user, including admins — seven years after the same bug class was first disclosed.
F5 BIG-IP CVE-2022-1388 Explained: The iControl REST Authentication Bypass
CVE-2022-1388 is an authentication bypass in the F5 BIG-IP iControl REST interface that leads to unauthenticated remote code execution, rated CVSS 9.8. Here is the timeline, root cause, and patched versions.
PaperCut CVE-2023-27350 Explained: Auth Bypass to Unauthenticated RCE
CVE-2023-27350 is an authentication bypass in PaperCut MF and NG that hands an attacker admin access and remote code execution, rated CVSS 9.8. Here is the timeline, root cause, and how to remediate.
CVE-2018-7750: Authentication bypass in paramiko SSH serv...
CVE-2018-7750 lets attackers bypass authentication on Paramiko SSH servers using interactive auth by forging a success message. Impact, timeline, and fixes inside.
CVE-2020-11651: Authentication bypass in SaltStack salt-m...
CVE-2020-11651, a critical CVSS 9.8 authentication bypass in SaltStack's salt-master, enabled unauthenticated RCE and fueled real-world attacks on LineageOS, Ghost, and DigiCert.
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