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Gitea EUVDEUVD-2026-101094

| CVE-2026-70400 MEDIUM
Incorrect Authorization (CWE-863)
N/A vendor:alpine
5.4
CVSS 3.1 · Vendor: vendor:alpine
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Access Gitea instance
  2. Exploit
    Trigger undisclosed vulnerability
  3. Impact
    Achieve undisclosed impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The exploitation conditions cannot be determined - no description of the vulnerable code path, required configuration, authentication state, or attack vector is available in the provided data. The only confirmed fact is that Alpine Linux classified the Gitea package upgrade to 1.27.3-r0 as a security fix. Defenders should not assume benign conditions simply because disclosure is sparse; treat the fix as mandatory until upstream detail clarifies scope.

Impact

Risk cannot be meaningfully quantified from the available data. No CVSS score or vector, no CWE, no description of the vulnerability class, no EPSS score, no KEV listing, and no POC are present. The sole signal is an Alpine Linux vendor package bump to 1.27.3-r0 that carries a security designation. Gitea is deployed across a broad range of organizations - from individual developers to enterprise teams - meaning even a mid-sized IT operation should evaluate whether its Alpine-hosted Gitea instance is at the affected version and apply the available fix without waiting for fuller disclosure. Until the upstream Gitea project or Alpine publishes a security advisory with technical detail, the realistic risk tier and exploitation conditions remain unknown.

Exploit ScenarioDerived

Because the vulnerability type is entirely undisclosed, no grounded exploit scenario can be constructed. No POC is identified, no KEV listing exists, and attack vector and complexity are unknown. Any scenario written would be speculative fabrication rather than analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 06, 2026

Gitea, the self-hosted Git service, received a security fix in Alpine Linux package version 1.27.3-r0. The underlying vulnerability type, affected code path, and exploitability details are not disclosed in the available intelligence data - only the Alpine Linux vendor advisory identifying the fixed package version is present. Security teams running Gitea on Alpine Linux should upgrade to the fixed package regardless of the incomplete disclosure, as the fix designation indicates a confirmed security defect.

RemediationAI

Upgrade the Gitea Alpine Linux package to version 1.27.3-r0 or later using the standard Alpine package manager: 'apk upgrade gitea'. No upstream Gitea project advisory URL, specific workaround guidance, or compensating controls were included in the available intelligence data. Organizations unable to immediately patch should consider restricting network access to the Gitea instance (e.g., placing it behind a VPN or firewall rule limiting exposure to trusted networks) as a general compensating control, with the trade-off of reduced accessibility for remote contributors. Monitor the Alpine Linux security tracker and the upstream Gitea release notes at gitea.io for additional details.

Affected VersionsENISA

Gitea 0 ≤1.27.2

Affected Packages

euvd gitea no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Gitea is an open-source, self-hosted Git service written in Go, widely used as a lightweight alternative to GitHub or GitLab. The vulnerability was addressed in Alpine Linux's packaging of Gitea at version 1.27.3-r0 (Alpine package revision). No CWE classification, CVSS vector, or description of the vulnerable component is available in the provided data. The root cause class, affected subsystem (e.g., repository management, authentication, webhook handling, API), and exploitation mechanism cannot be determined from the available intelligence.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vendor:alpine) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Primary rating from Vendor (vendor:alpine) · only source for this CVE.

CVSS VectorVendor: vendor:alpine

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

DescriptionCVE.org

Alpine Linux: gitea fixed in 1.27.3-r0

Threat Intelligence Overview

EPSS Score
0.4%
Top 70% exploitable
Prevalence
Medium
popular self-hosted Git service across developer and enterprise teams
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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