---
cve: "CVE-2026-10547"
severity: "MEDIUM"
cvss: 5.9
epss: "23%"
vendor: "IBM"
kev: false
exploited: false
published: "2026-08-05 19:17:19"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T21:33:42+02:00"
---

# CVE-2026-10547

> 5.9 MEDIUM

## Beschreibung

IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- f307634e708a3247d23276943c4b848b15e19e84 (Commit)

## Referenzen

- <https://www.ibm.com/support/pages/node/7282647>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-10547) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_