CVE-2026-53708Public exploitNetwork attack vectorHinoki check available

Authenticated internal resource access via DNS rebinding

Published Sep 14, 2026 · Updated Sep 14, 2026

SSRF in IBM ContextForge before 1.0.3 allows remote authenticated users to access internal services through DNS rebinding. At /admin/gateways/test, validate_gateway_test_url() approves a validation-time address, but ResilientHttpClient re-resolves the unbound hostname when connecting. Exploitation requires the non-default Admin API and a database-backed role with gateways.read permission, and it exposes internal APIs, cloud metadata credentials, or internal ports.

CVSS severity6.6
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in IBM ContextForge before 1.0.3 allows remote authenticated users to access internal services through DNS rebinding. At /admin/gateways/test, validate_gateway_test_url() approves a validation-time address, but ResilientHttpClient re-resolves the unbound hostname when connecting. Exploitation requires the non-default Admin API and a database-backed role with gateways.read permission, and it exposes internal APIs, cloud metadata credentials, or internal ports.

The record

CVE
CVE-2026-53708
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
IBM
Product
ContextForge
Classifications
CWE-367, CWE-918, CWE-350, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · ContextForgeversion=< 1.0.3

Published CVSS scores

6.6GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-918Server-Side Request Forgery (SSRF)
CWE-350Reliance on Reverse DNS Resolution for a Security-Critical Action
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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