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CVE-2026-82842

SAML Single Sign On < 6.0.0 - Unauthenticated Privilege Escalation via Account Matching

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82842

Published

The SAML Single Sign On WordPress plugin before 6.0.0 does not honour the configured criterion for linking an incoming single sign-on identity to a WordPress account, always resolving the identity by login name whatever the site has chosen, which allows an attacker who can have the site's identity provider assert a login name of their choosing to authenticate as any account, including an administrator, without proving ownership of that account.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82842

Published

SAML Single Sign On

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Unknown",
                    "product": "SAML Single Sign On",
                    "versions": [
                        {
                            "status": "affected",
                            "versionType": "semver",
                            "version": "4.8.43",
                            "lessThan": "6.0.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON