PT-2026-60776 · Signoz · Signoz

George Chen · CVE-2026-63094 · Published 2026-07-17 · Updated 2026-07-17

NVD

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

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.

Exploit

Fix

Insufficient Verification of Data Authenticity

Open Redirect

Weakness Enumeration

CWE-345

CWE-601

Related Identifiers

CVE-2026-63094

Affected Products

Signoz

References · 4

• 🔥 https://github.com/SigNoz/signoz/issues/11746 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-63094 · Security Note
• https://vulncheck.com/advisories/signoz-sso-oauth-state-manipulation-session-token-theft · Note
• https://github.com/SigNoz/signoz/pull/11844 · Note