Is this vulnerability remotely exploitable?

Yes. If the vulnerable Sentry instance's SAML SSO endpoints are reachable, an attacker who controls or can act as a malicious SAML Identity Provider can exploit the issue remotely without needing local access to the server.

What level of access does an attacker need to exploit this?

The attacker must be able to operate a malicious SAML Identity Provider and either target a multi-organization Sentry deployment or already possess permissions to modify SSO settings for an organization on the instance. They do not need the victim's password or direct access to the victim's account beforehand.

What is the safest general fix pattern?

The safest pattern is to enforce strict, organization-scoped bindings between SAML assertions, IdP configurations, and user identities. This includes validating issuer and audience, using stable unique identifiers for user mapping, and ensuring an IdP configured for one organization cannot be used to authenticate users in another.

Severity:

CRITICAL RISK

(9.1)

Improper Authentication in SAML SSO (CWE-287) in Sentry Multi-Organization Deployments

CVE-2026-27197

Published:

Feb 20, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Improper Authentication / SSO Logic Flaw

CWE:

CWE-287

Impact:

Account Takeover via SAML SSO Misvalidation

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Authentication / SSO Logic Flaw

CWE:

CWE-287

Impact:

Account Takeover via SAML SSO Misvalidation

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Improper Authentication in SAML SSO (CWE-287) in Sentry Multi-Organization Deployments

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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