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Financial Transaction Manager CVE-2026-18875

| EUVDEUVD-2026-85355 HIGH
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2026-09-23 ibm GHSA-6r8h-q9qx-q8m5
7.3
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
7.3 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
vuln.today AI
7.3 HIGH

Unauthenticated network insert (AV:N/AC:L/PR:N/UI:N); impacts kept Low because harm is indirect via LLM tool steering rather than direct execution, consistent with IBM's 7.3.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

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

Lifecycle Timeline

4
Metadata Corrected
Sep 23, 2026 - 16:40 vuln.today
tag: Openshift added
Metadata Corrected
Sep 23, 2026 - 16:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 23, 2026 - 16:18 vuln.today
CVE Published
Sep 23, 2026 - 15:47 cve.org
HIGH 7.3

DescriptionCVE.org

IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to RAG poisoning via unauthenticated runbook upsert (CWE-74) in the FTM AI agent server (api.vectordb.runbooks.js:51). An unauthenticated attacker can insert malicious runbook content into the agent's vector database to steer AI-driven MCP tool calls, potentially triggering unauthorized payment actions or exfiltrating payment data.

AnalysisAI

Unauthenticated insertion of malicious runbook content into the vector database backing IBM Financial Transaction Manager (FTM) for Red Hat OpenShift's AI agent allows retrieval-augmented generation (RAG) poisoning that can steer AI-driven MCP tool calls toward unauthorized payment actions or exfiltration of payment data. IBM self-rates the issue CVSS 7.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), reflecting unauthenticated network reachability and low attack complexity rather than high per-impact severity, since the realized effect is mediated by LLM behavior and is probabilistic rather than deterministic. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires network reachability to the FTM AI agent server's runbook upsert API (api.vectordb.runbooks.js:51), which per CVSS PR:N and the description accepts inserts without authentication. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment IBM self-reports CVSS 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), driven by unauthenticated network reachability and low complexity rather than by high per-impact severity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor fix referenced by IBM at https://www.ibm.com/support/pages/node/7288641 - patch availability is confirmed from the vendor, though the input data does not specify an exact fixed version number, so the advisory should be checked for the precise build to upgrade to. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all IBM Financial Transaction Manager for Red Hat OpenShift deployments with the FTM AI agent endpoint network-accessible and MCP tools wired to payment-affecting actions; restrict network access to trusted zones or disable the AI agent until patched; apply the vendor patch per advisory if operationally feasible. …

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CVE-2026-18875 vulnerability details – vuln.today

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