BIT-GRAFANA-2026-12704 SAML assertion replay via skipped InResponseTo validation

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

PT-2026-88160

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

CVE-2026-12704

On Grafana Enterprise instances with the optional IdP-initiated SAML single sign-on enabled allowidpinitiated = true, disabled by default, Grafana did not fully validate the InResponseTo field of SAML responses. An attacker who obtained a valid, signed SAML assertion for a user could replay it...

SUSE CVE-2026-12704

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

CVE-2026-12704

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

CVE-2026-12704 SAML assertion replay via skipped InResponseTo validation

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

CVE-2026-12704

In Grafana Enterprise , enabling the allow_idp_initiated SAML setting (off by default) causes the SAML library to skip validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection , allowing an attacker who obtains a valid signed S...

CVE-2026-12704 SAML assertion replay via skipped InResponseTo validation

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

EUVD-2026-70197

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

PT-2026-84753

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

SAML assertion replay via skipped InResponseTo validation

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and ga...

CVE-2026-53425

Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validateauthresp/3 in lib/samly/sphandler.ex validates a SAML response for the...

CVE-2026-53425 Missing InResponseTo validation in Samly allows acceptance of unsolicited SAML responses

Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validateauthresp/3 in lib/samly/sphandler.ex validates a SAML response for the...

CVE-2026-53425 Missing InResponseTo validation in Samly allows acceptance of unsolicited SAML responses

Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validateauthresp/3 in lib/samly/sphandler.ex validates a SAML response for the...

CVE-2026-53425

CVE-2026-53425 is an Insufficient Verification of Data Authenticity vulnerability in Dropbox Samly (Elixir SAML library), affecting versions 0.3.0 and later . The function Samly.SPHandler.validate_authresp/3 in lib/samly/sp_handler.ex never compares SubjectConfirmationData/@InResponseTo against t...

EUVD-2026-63489

Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validateauthresp/3 in lib/samly/sphandler.ex validates a SAML response for the...

PT-2026-79073

Name of the Vulnerable Software and Affected Versions dropbox samly versions 0.3.0 and later Description An issue exists where the service provider fails to properly verify the authenticity of SAML responses. Specifically, the validate authresp/3 function in lib/samly/sp handler.ex does not compa...

CVE-2026-53425: Insufficient Verification of Data Authenticity

Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validateauthresp/3 in lib/samly/sphandler.ex validates a SAML response for the...

CVE-2026-49284 SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking...

CVE-2026-49284: Insufficient Verification of Data Authenticity

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking...