---
cve: "CVE-2026-72915"
severity: "HIGH"
cvss: 7.5
epss: "28%"
vendor: "mastodon"
kev: false
exploited: false
published: "2026-08-10 22:17:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T16:40:16+02:00"
---

# CVE-2026-72915

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Mastodon is a free, open-source social network server based on ActivityPub. From 4.6.0-beta.1 until 4.6.4 and 4.7.0-beta.1, any logged-in local user could use the show action in app/controllers/admin/collections_controller.rb to access personally identifying information about another local user in a collection because the controller used the general collection policy instead of the admin collection policy namespace. The exposed data included the other user's current email address and last-used IP address. This issue is fixed in versions 4.6.4 and 4.7.0-beta.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 467c933459c7d0e5513475b9e4888afaedfb1074 (Commit)
- 930aa9fee26bf9eaefe27826fa1061288d83373b (Commit)

## Referenzen

- <https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj>
- <https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074>
- <https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b>
- <https://github.com/mastodon/mastodon/releases/tag/v4.6.4>
- <https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72915) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_