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No exploitation reportedAwaiting NVD analysis

CVE-2026-110279

IBM ContextForge MCP Gateway is affected by an improper authentication vulnerability

No exploitation reported by the sources we read.

  • Published2026-11-13
  • WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 is vulnerable to improper credential handling because the X-Upstream-Authorization request header can override the gateway-managed upstream credential for OAuth (authorization_code and client_credentials), bearer and basic authenticated gateways, which could allow an authenticated user to cause upstream requests to be made with a different credential and bypass per-user permission and audit attribution.

Timeline

dates in UTC
  1. 2026-11-1321:43CVE publishedCNA

Versions per branch

Products declared by the CNA

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • IBM ContextForge MCP Gateway
    Affected
    • ≥ 1.0.0, ≤ 1.1.0no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-110279 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.18.12026-11-13
  • NVDCVSS 3.18.1read 2026-11-13
  • CNAweakness (CWE)CWE-2872026-11-13
  • NVDweakness (CWE)CWE-287read 2026-11-13

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2026-11-13
Last Modified
2026-11-13
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-110279?

IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 is vulnerable to improper credential handling because the X-Upstream-Authorization request header can override the gateway-managed upstream credential for OAuth (authorization_code and client_credentials), bearer and basic authenticated gateways, which could allow an authenticated user to cause upstream requests to be made with a different credential and bypass per-user permission and audit attribution.

Is CVE-2026-110279 actively exploited?

Active exploitation of CVE-2026-110279 has not been confirmed.

What is the CVSS score for CVE-2026-110279?

CVE-2026-110279 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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