CVE-2026-70402

🎯 CVE-2026-70402 🧪 PoC 🇪🇺 EUVD

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CVE-2026-70402 | Gitea creates server-side Git hook directories and scripts with mode 0777 and relies on the process umask to restrict access. With a permissive umask such as 0000 or 0002, another local user who can reach the repository storage may modify a hook or add an executable to a writable hook directory. A later Git operation can execute that file as the Gitea service account.

Gitea creates server-side Git hook directories and scripts with mode 0777 and relies on the process umask to restrict access. With a permissive umask such as 0000 or 0002, another local user who can reach the repository storage may modify a hook or add an executable to a writable hook directory. A later Git operation can execute that file as the Gitea service account.

Klassifikation & Betroffenheit:

CWE-732 Gitea Gitea 0 ≤1.27.2

Incorrect Permission Assignment for Critical Resource 🎯 High

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

🛡️ Empfohlene Mitigation: When using a critical resource such as a configuration file, check to see if the resource has insecure permissions (such as being modifiable by any regular user) [REF-62], and generate an error or even exit the software if there is a possibility that the resource could have been modified by an unauthorized party.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-1 · Accessing Functionality Not Properly Con… (High) CAPEC-17 · Using Malicious Files (Very High) CAPEC-60 · Reusing Session IDs (aka Session Replay) (High) CAPEC-122 · Privilege Abuse (Medium) CAPEC-127 · Directory Indexing (Medium) CAPEC-180 · Exploiting Incorrectly Configured Access… (Medium) CAPEC-206 · Signing Malicious Code (Very High) CAPEC-234 · Hijacking a privileged process (Medium)

🎯 ATT&CK-Techniken (Kill-Chain-Verhalten):

T1574.010 · Hijack Execution Flow: ServicesFil… T1574.005 · Hijack Execution Flow: Executable … T1134.001 · Access Token Manipulation:Token Im… T1550.004 · Use Alternate Authentication Mater… T1548 · Abuse Elevation Control Mechanism T1083 · File and Directory Discovery

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-115253 7.3 CVE-2025-23258 7.3 CVE-2025-53396 7.3 CVE-2025-55524 7.3 CVE-2025-48961 7.3

🩹 Patch verfügbar (OSV):

🩹 146cc3eec57174711eac0e0a0c7b38670c6e3922 (Commit)

🇩🇪 BSI-Sicherheitshinweise: BSI · hoch · Gitea: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Pro ↗

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 10/2026

Heute 04.11.

CVSS-Vektor-Analyse: 5.8

AV · Angriffsvektor Lokal

AC · Komplexität Hoch

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Gering

I · Integrität Hoch

A · Verfügbarkeit Gering

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

Veröffentlicht:14.10.2026

Aktualisiert:14.10.2026 15:03

Assigner (CNA):Gitea

EUVD-ID:EUVD-2026-101095

CWE-732 ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	CVEs	Anteil
≥90 %	769	0,2 %
≥50 %	3.438	0,9 %
≥10 %	22.761	5,7 %
<10 %	372.538	93,2 %

5.8 MEDIUM

EPSS

0.2%

CVE-2026-70402 💻 Lokal 🔑 Geringe Nutzerrechte nötig

Gitea

CVE-2026-70402 | Gitea creates server-side Git hook directories and scripts with mode 0777 and relies on the process umask to restrict access. With a permissive umask such as 0000 or 0002, another local user who can reach the repository storage may modify a hook or add an executable to a writable hook directory. A later Git operation can execute that file as the Gitea service account.

CWE-732 ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

vor 21 Tagen

🛡️ Details ➔

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