---
cve: "CVE-2026-49299"
severity: "MEDIUM"
cvss: 5.3
epss: "0.3%"
vendor: "OpenStack"
kev: false
exploited: false
published: "2026-05-28 22:17:02"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T08:01:11+02:00"
---

# CVE-2026-49299

> 5.3 MEDIUM

## Beschreibung

In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 68346f102f34be9345e8e590b68622101a9c4922 (Commit)
- 6e846c1a2d5ad40f767e87b6c8ddb14b509ba5d7 (Commit)

## Referenzen

- <https://bugs.launchpad.net/bugs/2150132>
- <https://review.opendev.org/c/openstack/neutron/+/989099>
- <https://www.openwall.com/lists/oss-security/2026/05/28/8>
- <http://www.openwall.com/lists/oss-security/2026/06/02/7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49299) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_