CVE-2026-57956Public exploitNetwork attack vector

Cross-organization rule access via unscoped UUID lookup

Published Jun 29, 2026 · Updated Jun 29, 2026

Broken access control in SigNoz before 0.133.0 allows remote authenticated users to read, edit, and delete other organizations' alert rules. GetStoredRule, EditRule, and DeleteRule match only the supplied rule UUID, while role checks cover the caller's organization rather than the rule owner's organization. Exploitation requires a target UUID and a multi-organization deployment sharing the rule store; single-organization OSS instances are unaffected.

CVSS severity6.1
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in SigNoz before 0.133.0 allows remote authenticated users to read, edit, and delete other organizations' alert rules. GetStoredRule, EditRule, and DeleteRule match only the supplied rule UUID, while role checks cover the caller's organization rather than the rule owner's organization. Exploitation requires a target UUID and a multi-organization deployment sharing the rule store; single-organization OSS instances are unaffected.

The record

CVE
CVE-2026-57956
Published
Jun 29, 2026
Updated
Jun 29, 2026
Vendor
SigNoz
Product
SigNoz
Classifications
CWE-639, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.130.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SigNoz · SigNozversion=0 <=0.130.1

Published CVSS scores

6.4VulnCheckCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
6.1VulnCheckCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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