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Attackers Target miniOrange SAML Flaws That Can Grant WordPress Admin Access

Attackers are exploiting two unauthenticated WordPress auth bypasses (CVE-2026-61979, CVE-2026-15981, max CVSS 9.8) in miniOrange SAML SSO to gain admin sessions.

Patchstack disclosed two flaws in the Xecurify miniOrange SAML 2.0 Single Sign On WordPress plugin: CVE-2026-15981 (CVSS 9.8) accepts malformed signatures because mo_saml_validate_signature() loosely checks the tri-state result of openssl_verify(), and CVE-2026-61979 (CVSS 8.1) enables privilege escalation via signature algorithm confusion. Both let unauthenticated attackers sign in as any WordPress user, including administrators; fixes shipped in Standard edition versions 17.0.6 and 17.0.5. DigitalOcean observed an attacker using the bypass to obtain an admin session cookie, opportunistic scanning is underway from six IP addresses, and PoC chaining code is public.

The Hacker News · 21d agoExploit / PoC in the wildCVE-2026-61979CVE-2026-15981

Related CVEs

  • CVE-2026-159819.8<1%
    The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4.
    The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification. This makes it possible for unauthenticated attackers to log in as any existing WordPress user, including administrators, by submitting a crafted SAMLResponse containing an…
    · WordPress—
  • CVE-2026-619798.1<1%
    Unauthenticated privilege escalation in miniOrange SAML SSO WordPress plugin
    CVE-2026-61979 is an unauthenticated privilege-escalation flaw (CWE-266, incorrect assignment of privileges) in the miniOrange 'SAML SP Single Sign On' plugin for WordPress, affecting every version up to and including 5.4.3. Because it is reachable over the network with no privileges required and no user interaction (the CVSS 3.1 vector rates attack complexity as high), a remote attacker can abuse the plugin's SAML single sign-on handling to gain WordPress administrator-level privileges without valid credentials. With administrator access, an attacker can modify content, install plugins or themes, create rogue admin accounts, and use the site as a foothold. Any WordPress site running the affected versions is exposed, and reporting indicates the plugin's paid editions were also vulnerable to related flaws in the same campaign. No public proof-of-concept is known for this specific flaw and it is not in CISA KEV (EPSS ~0.3% over 30 days), but two separate CVSS 9.8 authentication-bypass flaws in the same plugin were exploited in the wild before they were even catalogued, and attackers are actively targeting miniOrange SAML flaws that grant WordPress admin access.
    · miniOrange SAML SP Single Sign On (WordPress plugin) <= 5.4.3 · miniOrange SAML SP Single Sign On - paid/premium editions (reported alongside the actively exploited related flaws)large

Appears with

product miniOrange SAML 2.0 Single Sign On 1product WordPress 1vendor DigitalOcean 1vendor miniOrange 1vendor Patchstack 1
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