What is the CVSS score of CVE-2026-28790?

CVE-2026-28790 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2026-28790?

Yes, a public proof-of-concept exploit is available for CVE-2026-28790. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-28790?

Within 24 hours: Identify all OliveTin instances in your environment and document current versions. Within 7 days: Upgrade all affected OliveTin deployments to version 3.0.0.11 or later. Within 30 days: Conduct a review of any action terminations occurring before the patch date to identify if this vulnerability was exploited.

Olivetin CVE-2026-28790

HIGH

Improper Access Control (CWE-284)

2026-03-05 security-advisories@github.com

GHSA-4fqm-6fmh-82mq

Denial Of Service Olivetin Suse

7.5

CVSS 3.1 · GitHub Advisory

View

Attack ChainAIDerived

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

Access

Send unauthenticated HTTP request
Exploit

Call KillAction RPC endpoint directly
Execution

Terminate running shell command execution
Impact

Deny service to legitimate users

Vulnerability Assessment

Weakness	CWE CWE-284 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. Sign in to read
Exploitation Conditions	OliveTin versions prior to 3000.11.0 with authRequireGuestsToLogin: true enabled. Attacker must have network access to the OliveTin web interface port. The KillAction RPC endpoint must be exposed and accessible without authentication validation despite login requirement configuration.
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Public exploit/POC available.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

OliveTin versions prior to 3000.11.0 suffer from broken access control allowing unauthenticated users to invoke the KillAction RPC endpoint and terminate running shell command executions, bypassing authentication restrictions. Public exploit code exists for this vulnerability, enabling remote denial of service attacks against legitimate administrative actions. The vulnerability affects OliveTin deployments regardless of authentication settings and has been remediated in version 3000.11.0 and later.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:06 CVSS 7.5

RemediationAI

A vendor patch is available — apply it immediately. Fixed in version 3000.11.0.. Restrict network access to the affected service where possible.

Affected Packages

go github.com/olivetin/olivetin fix: 0.0.0-20260302002902-d9804182eae4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in go

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

Technical ContextAI · show details

Classified as CWE-284 (Improper Access Control). Affects Olivetin. OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.11.0, OliveTin allows an unauthenticated guest to terminate running actions through KillAction even when authRequireGuestsToLogin: true is enabled. Guests are correctly blocked from dashboard access, but can still call the KillAction RPC directly and successfully stop a running action. This is a broken access control issue that causes unauthorized denial of service against legitimate action executions.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 7.5 HIGH

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

SUSE HIGH

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

PoC Detected

Mar 10, 2026 - 15:29 vuln.today

Public exploit code

Patch released

Mar 10, 2026 - 15:29 nvd

Patch available

CVE Published

Mar 05, 2026 - 20:16 nvd

HIGH 7.5

DescriptionGitHub Advisory

OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.11.0, OliveTin allows an unauthenticated guest to terminate running actions through KillAction even when authRequireGuestsToLogin: true is enabled. Guests are correctly blocked from dashboard access, but can still call the KillAction RPC directly and successfully stop a running action. This is a broken access control issue that causes unauthorized denial of service against legitimate action executions. This issue has been patched in version 3000.11.0.

Executive ViewAI

Why It Matters

OliveTin versions prior to 3.0.0.11 contain an authentication bypass vulnerability that allows unauthenticated users to disrupt critical automated operations by terminating running actions, even when guest login restrictions are configured. Organizations using OliveTin to manage infrastructure automation face service disruption and operational continuity risks.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls restricting OliveTin web interface to trusted networks only; (2) Deploy a Web Application Firewall with rules blocking unauthenticated KillAction requests; (3) Disable the KillAction feature if operationally feasible; (4) Monitor audit logs for unauthorized termination attempts.

Threat Intelligence Overview

EPSS Score

0.1%

Top 78% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

GitHub

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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.