---
cve: "CVE-2026-57956"
severity: "MEDIUM"
cvss: 6.1
epss: "21%"
vendor: "SigNoz"
kev: false
exploited: false
published: "2026-06-29 18:16:40"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T19:17:39+02:00"
---

# CVE-2026-57956

> 6.1 MEDIUM · 🧪 PoC

## Beschreibung

SigNoz before 0.133.0 contains a broken access control vulnerability that allows authenticated users to access other organizations' alert rules by supplying a target rule UUID, as the alert rule store predicates fail to filter by organization ID. Attackers can read, edit, and delete alert rules belonging to other organizations by exploiting the missing tenant isolation check, bypassing multi-tenant access controls.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 0c28b8b25125448935f760c448d9511683c40857 (Commit)

## Referenzen

- <https://github.com/SigNoz/signoz/issues/11830>
- <https://github.com/SigNoz/signoz/releases/tag/v0.133.0>
- <https://github.com/SigNoz/signoz/pull/12117>
- <https://www.vulncheck.com/advisories/signoz-cross-organization-insecure-direct-object-reference-in-alert-rules>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-57956) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_