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CVE-2026-28323 is a critical improper-authentication vulnerability in SolarWinds Web Help Desk (WHD) 2026.1 and earlier when SAML 2.0 authentication is enabled. The legacy SAML consumer conditionally performed signature validation only when a verification certificate was configured and accepted unsigned assertions even where a certificate was configured. It then extracted the authenticated identity from the first assertion's NameID without enforcing required SAML validation, including response signature, Destination, audience restriction, temporal conditions, InResponseTo correlation, and issuer validation. A remote unauthenticated attacker can submit a forged SAML response to the assertion consumer/login flow and impersonate an existing WHD account.
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20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CVSS 9.8 unauthenticated SAML authentication-bypass vulnerability in SolarWinds Web Help Desk 2026.1 and earlier when SAML 2.0 authentication is enabled. Forged unsigned SAML responses can impersonate an existing user and establish a session because signature and other required SAML assertion validations were not enforced.
A critical authentication bypass vulnerability in SolarWinds Web Help Desk when SAML 2.0 authentication is enabled, allowing a remote unauthenticated attacker to establish a session without valid credentials via a malicious or relayed SAMLResponse.
An authentication-bypass vulnerability in SolarWinds Web Help Desk caused by improper processing of SAML assertions. An attacker could bypass normal login and gain unauthorized access to sensitive administrative functions.
An authentication bypass vulnerability affecting SolarWinds Web Help Desk's SAML authentication functionality.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.