CVE-2026-63094

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-63094
SigNoz before 0.134.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers can call the unauthenticated sessions context endpoint with a ref parameter pointing to an attacker-controlled host, deliver the resulting crafted login URL to a victim, and receive the victim's access and refresh tokens when they complete SSO authentication.

8.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/SigNoz/signoz/commit/253ca7dd7eb4f7a32a694c249eb0d5d0804d5619
https://github.com/SigNoz/signoz/issues/11746
https://github.com/SigNoz/signoz/pull/12172
https://github.com/SigNoz/signoz/releases/tag/v0.134.0
https://www.vulncheck.com/advisories/signoz-sso-oauth-state-manipulation-session-token-theft
Configurations

No configuration.

History

27 Jul 2026, 18:16

Type Values Removed Values Added
Summary (en) SigNoz through 0.133.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers can call the unauthenticated sessions context endpoint with a ref parameter pointing to an attacker-controlled host, deliver the resulting crafted login URL to a victim, and receive the victim's access and refresh tokens when they complete SSO authentication. (en) SigNoz before 0.134.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers can call the unauthenticated sessions context endpoint with a ref parameter pointing to an attacker-controlled host, deliver the resulting crafted login URL to a victim, and receive the victim's access and refresh tokens when they complete SSO authentication.
References
  • () https://github.com/SigNoz/signoz/releases/tag/v0.134.0 -

21 Jul 2026, 13:17

Type Values Removed Values Added
References
  • {'url': 'https://github.com/SigNoz/signoz/pull/11844', 'source': 'disclosure@vulncheck.com'}
  • () https://github.com/SigNoz/signoz/commit/253ca7dd7eb4f7a32a694c249eb0d5d0804d5619 -
  • () https://github.com/SigNoz/signoz/pull/12172 -

17 Jul 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-07-17 15:16

Updated : 2026-07-27 18:16

NVD link : CVE-2026-63094

Mitre link : CVE-2026-63094

CVE.ORG link : CVE-2026-63094

JSON object : View

Products Affected

No product.

CWE
CWE-345

Insufficient Verification of Data Authenticity

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')