---
cve: "CVE-2026-90957"
severity: "MEDIUM"
cvss: 5.1
epss: "23%"
vendor: "MISP"
kev: false
exploited: false
published: "2026-09-14 13:19:32"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T06:34:40+02:00"
---

# CVE-2026-90957

> 5.1 MEDIUM · 🧪 PoC

## Beschreibung

Affected versions of MISP serve uploaded SVG images inline without a restrictive browser sandbox.


The commit explains that SVG files are XML documents rather than passive bitmap images. While scripts inside SVG do not execute when the SVG is rendered through a normal , they can execute when the SVG is navigated to directly or embedded as a document. In that case, malicious  elements, event handlers, or javascript: URLs execute on the MISP origin with the viewer’s session.


The affected use cases include:



 - organisation SVG logos;
 - event-report SVG pictures.






Importantly, the vulnerable behavior is on the serve path, not merely the upload path: the patch notes that a malicious SVG uploaded while SVG support was enabled could remain dangerous even after uploads were later disabled.



Version affected: ≤2.5.45

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- 86496aecc (Commit)

## Referenzen

- <https://github.com/MISP/MISP/commit/86496aecc>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90957) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_