---
cve: "CVE-2026-66256"
severity: "HIGH"
cvss: 7.2
epss: "52%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-08-13 15:19:56"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T20:22:26+02:00"
---

# CVE-2026-66256

> 7.2 HIGH

## Beschreibung

** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.

This issue affects Apache Shindig: all versions.

Users with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.

As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.

NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

## CVSS-Vektor

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

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

## Referenzen

- <https://lists.apache.org/thread/opgpnhk149614gx6vcy3lvyjnycw8mkh>
- <http://www.openwall.com/lists/oss-security/2026/08/13/7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-66256) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_