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Coral Server CVE-2026-30968

CRITICAL
Missing Authorization (CWE-862)
2026-03-10 security-advisories@github.com
9.8
CVSS 3.1 · GitHub Advisory
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Attack ChainAIDerived

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

  1. Access
    Connect to SSE endpoint without authentication
  2. Exploit
    Inject crafted messages into session
  3. Impact
    Intercept agent communications or modify payloads

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
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

Coral Server versions prior to 1.1.0 with SSE endpoint (/sse/v1/...) enabled. No authentication required; remote unauthenticated attacker can connect directly to the SSE endpoint without proper session participant validation.

Impact

CVSS 9.8 — first of three Coral Server vulnerabilities.

Exploit ScenarioDerived

Unauthenticated access to collaboration data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Coral Server open collaboration platform has a missing authorization enabling unauthenticated access to all collaboration data.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:55 CVSS 9.8

Missing authorization in Coral Server exposes collaboration infrastructure.

RemediationAI

Apply patches.

Affects your stack

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

Technical ContextAI · show details

Coral Server has a CWE-862 missing authorization vulnerability.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

DescriptionGitHub Advisory

Coral Server is open collaboration infrastructure that enables communication, coordination, trust and payments for The Internet of Agents. Prior to 1.1.0, the SSE endpoint (/sse/v1/...) in Coral Server did not strongly validate that a connecting agent was a legitimate participant in the session. This could theoretically allow unauthorized message injection or observation. This vulnerability is fixed in 1.1.0.

Executive ViewAI

Why It Matters

A critical authorization vulnerability in Internet of Agents (versions ≤1.1.0) could allow unauthenticated attackers to manipulate trust and payment systems, directly threatening financial transactions and system integrity. Organizations using affected versions face immediate risk of unauthorized fund transfers, account compromise, and potential regulatory exposure.

Business Impact: Severe
Compensating Controls

Implement network segmentation to restrict access to affected systems; deploy WAF rules to block suspicious trust/payment API requests; disable trust and payment features until patch availability; enforce multi-factor authentication for all administrative access; enable comprehensive audit logging for all trust/payment transactions; implement rate limiting on authorization endpoints; require manual approval for high-value transactions; consider temporary deployment of reverse proxy with strict input validation.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Out-of-Cycle
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
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.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:coralos:coral_server:*:*:*:*:*:*:*:*

Related Vulnerabilities in Coral Server Authorization and Authentication Bypass

View all 3

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