CVE-2026-97055 SigNoz - Authentication Bypass

SigNoz v0.8.0 before v0.143.0 contains a broken authentication caused by defaulting JWT tokenizer signing secret to empty and lack of validation, letting unauthenticated attackers forge valid session tokens, exploit requires knowledge of existing user ID.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.41% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
24 September 2026
Updated
15 October 2026
Weakness
CWE-1188

Vendor fix

Update to version v0.143.0 or later which requires a JWT secret and changes default provider.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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