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Gitea EUVDEUVD-2026-101111

| CVE-2026-78433 MEDIUM
Improper Access Control (CWE-284)
N/A vendor:alpine GHSA-w7q4-4ccp-896r
5.9
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
    Unknown attack surface
  2. Exploit
    Exploit unspecified vulnerability
  3. Impact
    Unknown impact

Vulnerability Assessment

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

1 technique across 1 tactic: Defense Evasion

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

Exploitation Conditions

Exploitation conditions are entirely unknown - no description, CVSS vector, or CWE is available to determine required attack vector, authentication level, configuration state, or affected functionality. No public exploit or KEV confirmation exists. Security teams cannot currently scope this vulnerability beyond 'Gitea on Alpine Linux prior to 1.27.3-r0 is affected.'

Impact

Risk cannot be meaningfully assessed from the available data. No CVSS vector, EPSS score, KEV status, POC availability, or CWE has been provided, and the CVE description contains only a fix reference with no detail on the vulnerability class, attack vector, required privileges, or impact. Gitea instances are typically internet-accessible, which would elevate risk if the underlying flaw is remotely exploitable, but this is entirely unconfirmed. SSVC decision inputs - exploitation status, automatable attack, technical impact - are all unknown. Security teams should treat this as a mandatory patch given the absence of information to scope exposure downward.

Exploit ScenarioDerived

Without knowledge of the vulnerability class, a realistic attack scenario cannot be constructed. If the flaw were remotely exploitable without authentication - a common pattern in self-hosted Git services - an attacker with network access to a Gitea instance could potentially compromise repositories, credentials, or the host. This is speculative and not grounded in confirmed CVE data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 06, 2026

Gitea as packaged in Alpine Linux has been patched in version 1.27.3-r0, addressing an unspecified vulnerability. The nature, impact class, and attack vector of the underlying flaw are not disclosed in the available intelligence - only the package-level fix version is confirmed. No CVSS score, CWE classification, or description of affected functionality has been published at time of analysis.

RemediationAI

Upgrade the Alpine Linux gitea package to version 1.27.3-r0 or later using 'apk upgrade gitea'. This is the only confirmed remediation path. No upstream Gitea advisory URL, vendor security bulletin, or CVE-specific patch reference has been provided, so administrators should monitor the Alpine Linux security tracker and the Gitea project releases page for additional disclosure. Given that the vulnerability nature is unknown, no targeted compensating control can be recommended - restricting Gitea's network exposure (placing it behind a VPN or firewall) is a prudent general measure until the vulnerability class is disclosed.

Affected VersionsENISA

Gitea 1.26.0 ≤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 a self-hosted Git service written in Go, widely used in developer and DevOps environments as a lightweight alternative to GitHub/GitLab. The affected package is 'gitea' distributed via Alpine Linux's apk package manager. The Alpine package version 1.27.3-r0 corresponds to Gitea upstream version 1.27.3 (the '-r0' suffix is Alpine's package revision). Without a CWE classification or description, the root cause class - whether injection, authentication bypass, path traversal, or otherwise - cannot be determined from available data.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vendor:alpine) PRIMARY 5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

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

CVSS VectorVendor: vendor:alpine

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

Lifecycle Timeline

1
CVSS changed
Oct 18, 2026 - 14:22 NVD
5.9 (MEDIUM)

DescriptionCVE.org

Alpine Linux: gitea fixed in 1.27.3-r0

Threat Intelligence Overview

EPSS Score
0.3%
Top 80% exploitable
Prevalence
Medium
popular self-hosted Git service, common in developer environments
Data Quality
5 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 0.3%
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

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
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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