Open Redirect Vulnerability in SigNoz SSO Authentication Flow
CVE-2026-63094

7.6HIGH

Key Information:

Vendor

Signoz

Status
Signoz
Vendor
CVE Published:
17 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-63094?

The vulnerability in SigNoz through version 0.133.0 allows attackers to leverage an open redirect in the SSO authentication process. Unauthenticated attackers can exploit this flaw to steal session tokens from users utilizing Google OAuth, SAML, or OIDC. By manipulating the authentication flow, attackers can redirect users to malicious sites and obtain sensitive access and refresh tokens upon successful login. This risk emphasizes the need for robust validation of redirect URLs in authentication mechanisms to safeguard user credentials.

Affected Version(s)

signoz 0 <= 0.133.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-63094 - Proof of Concept

References

https://github.com/SigNoz/signoz/issues/11746
technical-descriptionexploit
https://github.com/SigNoz/signoz/pull/11844
issue-tracking
https://www.vulncheck.com/advisories/signoz-sso-oauth-sta...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.