---
cve: "CVE-2026-72723"
severity: "MEDIUM"
cvss: 5.3
epss: "39%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-08-10 16:19:49"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T20:23:03+02:00"
---

# CVE-2026-72723

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, SiteSerializer.anonymous_default_navigation_menu_tags serializes tags from SiteSetting.default_navigation_menu_tags without applying DiscourseTagging.filter_visible for the anonymous viewer. An unauthenticated user can retrieve restricted tag names and descriptions through /site.json when those tags are limited by inaccessible categories, category tag groups, or tag-group permissions. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 94190ccb5176eb4ab1f2b509fcecc3fc682dadae (Commit)
- 3a87be49d621faddf5cea3f6a090adc9b7cbb7e8 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-4p6q-h74v-5j7p>
- <https://github.com/discourse/discourse/pull/42091>
- <https://github.com/discourse/discourse/pull/42092>
- <https://github.com/discourse/discourse/pull/42093>
- <https://github.com/discourse/discourse/pull/42094>
- <https://github.com/discourse/discourse/commit/0248e9ca82d0493037a9ca04d73904ccfad795f9>
- <https://github.com/discourse/discourse/commit/03444ddb74d535dda557350f4c5800a6ec2669d7>
- <https://github.com/discourse/discourse/commit/900f51c147913f667e64484c2f2dd48c723314ac>
- <https://github.com/discourse/discourse/commit/da84c677213cac3b024e753f180f45472b89efde>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72723) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_