keycloak: Keycloak: Denial of Service via specially crafted SAML input

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language SAML endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service DoS where the server becomes...

CVE-2026-28809

XML External Entity XXE vulnerability in esaml and its forks allows an attacker to cause the system to read local files and incorporate their contents into processed SAML documents, and potentially perform SSRF via crafted SAML messages. esaml parses attacker-controlled SAML messages using...

Fortinet Confirms Active FortiCloud SSO Bypass on Fully Patched FortiGate Firewalls

Fortinet has officially confirmed that it's working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls. "In the last 24 hours, we have identified a number of cases where the exploit was to a device th...

EUVD-2025-202191

An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message...

CVE-2025-46705

A denial of service vulnerability exists in the gassertnotreached functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafted SAML assertion response can lead to a denial of service. An attacker can send a malformed SAML response to trigger this vulnerability. Mitigation Mitigation fo...

CVE-2025-47151

A type confusion vulnerability exists in the lassonodeimplinitfromxml functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafted SAML response can lead to an arbitrary code execution. An attacker can send a malformed SAML response to trigger this vulnerability...

EUVD-2015-2775

Malware in sbrugna...

CVE-2022-31261

An XXE issue was discovered in Morpheus through 5.2.16 and 5.4.x through 5.4.4. A successful attack requires a SAML identity provider to be configured. In order to exploit the vulnerability, the attacker must know the unique SAML callback ID of the configured identity source. A remote attacker ca...

GHSA-M269-WJ6G-C459 PySAML2 XML external entity attack

PySAML2 allows remote attackers to conduct XML external entity XXE attacks via a crafted SAML XML request or response...

CVE-2019-12346

In the miniOrange SAML SP Single Sign On plugin before 4.8.73 for WordPress, the SAML Login Endpoint is vulnerable to XSS via a specially crafted SAMLResponse XML post...

High severity vulnerability that affects org.apache.cxf.fediz:fediz-spring and org.apache.cxf.fediz:fediz-spring2

The application plugins in Apache CXF Fediz 1.2.x before 1.2.3 and 1.3.x before 1.3.1 do not match SAML AudienceRestriction values against configured audience URIs, which might allow remote attackers to have bypass intended restrictions and have unspecified other impact via a crafted SAML token...

CVE-2018-7644

The XmlSecLibs library as used in the saml2 library in SimpleSAMLphp before 1.15.3 incorrectly verifies signatures on SAML assertions, allowing a remote attacker to construct a crafted SAML assertion on behalf of an Identity Provider that would pass as cryptographically valid, thereby allowing th...

CVE-2016-10127

PySAML2 allows remote attackers to conduct XML external entity XXE attacks via a crafted SAML XML request or response...

Authentication flaw

The application plugins in Apache CXF Fediz 1.2.x before 1.2.3 and 1.3.x before 1.3.1 do not match SAML AudienceRestriction values against configured audience URIs, which might allow remote attackers to have bypass intended restrictions and have unspecified other impact via a crafted SAML token...

CVE-2015-2684

Shibboleth Service Provider SP before 2.5.4 allows remote authenticated users to cause a denial of service crash via a crafted SAML message...

UBUNTU-CVE-2015-2684

Shibboleth Service Provider SP before 2.5.4 allows remote authenticated users to cause a denial of service crash via a crafted SAML message...

UBUNTU-CVE-2012-6426

LemonLDAP::NG before 1.2.3 does not use the signature-verification capability of the Lasso library, which allows remote attackers to bypass intended access-control restrictions via crafted SAML data...

CVE-2012-6426

LemonLDAP::NG before 1.2.3 does not use the signature-verification capability of the Lasso library, which allows remote attackers to bypass intended access-control restrictions via crafted SAML data...