CVE-2026-77822IBM ContextForge MCP Gateway is affected by server-side request forgery (DNS rebinding) via the A2A agent invocation endpoint

IBM ContextForge MCP Gateway could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery via DNS rebinding.

9.6 CRITICALEPSS 0.37%Not in KEVNVD: Analyzed

Last updated: 2026-09-15 15:16 UTC

OverviewCVSS details

9.6CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Sep 4, 2026
Assigner: ibm

Affected

ContextForge MCP Gateway (IBM)

Versions: <= v1.0.8

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact total

EPSS · FIRST, scored Nov 8

0.37%chance of exploitation in 30 days

Higher than 31.15% of CVEs

CVSS 3.1 · NVD

9.6Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: None

CVSS 3.1 · ibm (CNA)

8.2High

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

Attack vector: Network
Attack complexity: High
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: None

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.6	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
8.2	HIGH	3.1ibm (CNA)	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Details

CVE ID: CVE-2026-77822
Status: Analyzed
Assigner (CNA): ibm
Published: Sep 4, 2026
Last modified: 2026-09-15 15:16 UTC
Weaknesses: CWE-918 · Server-Side Request Forgery (SSRF)

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 10:17 UTC.