---
cve: "CVE-2026-34966"
severity: "HIGH"
cvss: 8.3
epss: "31%"
vendor: "Gitea"
kev: false
exploited: false
published: "2026-08-05 20:28:57"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T12:18:22+02:00"
---

# CVE-2026-34966

> 8.3 HIGH · 🧪 PoC

## Beschreibung

Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply arbitrary URLs through release asset download URLs, pull-request patch URLs, or OAuth avatar endpoints to reach internal services, cloud instance-metadata endpoints, or read local files such as the application configuration containing database credentials and signing secrets, with exfiltrated content persisted as migration release assets for later retrieval.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- b969123b7fac51c88daab5cb64e5b2f4abd53288 (Commit)

## Referenzen

- <https://github.com/go-gitea/gitea>
- <https://github.com/go-gitea/gitea/security/advisories/GHSA-2wm4-vwp6-v7xc>
- <https://github.com/go-gitea/gitea/commit/b969123b7fac51c88daab5cb64e5b2f4abd53288>
- <https://www.vulncheck.com/advisories/gitea-prior-to-ssrf-via-migration-uri-fetch-bypass>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34966) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_