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IBM DataPower Gateway EUVDEUVD-2026-94986

| CVE-2026-14990 CRITICAL
Cross-site Scripting (XSS) (CWE-79)
2026-10-08 ibm GHSA-cmxx-hw22-cjvp
9.3
CVSS 3.1 · Vendor: ibm
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Attack ChainAIDerived

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

  1. Access
    Craft malicious Web UI link with JS payload
  2. Delivery
    Lure authenticated operator to open it
  3. Exploit
    Script executes in trusted admin session
  4. Execution
    Harvest session credentials/tokens
  5. Impact
    Impersonate administrator on gateway

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation targets the DataPower Gateway Web UI (the appliance management console) and requires an authenticated operator/administrator to interact with attacker-supplied content (CVSS UI:R) - e.g. clicking a crafted link or loading a malicious request against the UI; the attacker themselves needs no credentials (PR:N). The meaningful impact (credential/session disclosure) is realized only within a trusted, already-authenticated UI session, so the limiting factors are: (1) the victim must be a logged-in Web UI user, (2) the management interface must be reachable by the attacker's lure path, and (3) user interaction is mandatory, which rules out silent mass exploitation. Affected only in versions 10.6.0.0 through 10.6.0.10; upgrading to the vendor-fixed build removes exposure.

Impact

This is a genuinely high-priority issue, though not for the reasons a 9.3 headline alone implies. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N) describes a network-reachable, low-complexity cross-site scripting flaw requiring no attacker privileges (PR:N, so unauthenticated) but requiring victim interaction (UI:R) - meaning a user must be lured into loading a crafted request/link against the DataPower Web UI. The scope change (S:C) and C:H/I:H reflect that script executing in an administrator's trusted session can harvest credentials or session material and act with that operator's authority, which is what drives the inflated score. Note the 9.3 figure does not match the CVSS 3.1 base computation for the supplied vector (that vector yields 9.0 under 3.1), suggesting the 9.3 is a CVSS 4.0-derived number applied to a 3.1 string - a minor data inconsistency worth noting but not changing the overall picture. Critically, there is NO EPSS score, NO CISA KEV listing, and NO public proof-of-concept provided in the input, so there is no evidence of active or imminent widespread exploitation; the risk here is theoretical-but-serious rather than confirmed-in-progress. The UI:R requirement materially lowers real-world exploitability versus a pure drive-by, because an attacker must still socially engineer an authenticated operator. Net: patch promptly given it targets the management plane of a security appliance, but this is a serious-latent-risk item, not an emergency-active-exploitation item.

Exploit ScenarioDerived

An attacker crafts a malicious URL or request targeting the DataPower Gateway Web UI that injects attacker-controlled JavaScript, then lures an administrator into opening it while logged into the management console. The injected script executes in the operator's trusted session, exfiltrating session credentials or tokens that let the attacker impersonate the administrator. No public exploit code was identified at time of analysis, and successful exploitation depends on the victim interacting with the attacker-supplied content (CVSS UI:R).

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 08, 2026

Cross-site scripting in the IBM DataPower Gateway 10.6.0 Web UI (builds 10.6.0.0 through 10.6.0.10) lets an unauthenticated attacker inject arbitrary JavaScript that executes in the browser of an operator who is already logged into the appliance management console, potentially leading to credential or session disclosure within that trusted session. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N, 9.3) confirms the attacker needs no credentials but the victim must interact with attacker-supplied content, so this is a lure-driven, high-impact issue rather than silent mass exploitation; no public exploit has been identified at time of analysis. A vendor patch is available, and only the 10.6.0.x range up to 10.6.0.10 is affected, so upgrading the fixed build removes exposure.

RemediationAI

Patch available per vendor advisory: IBM documents the fix for this XSS at https://www.ibm.com/support/pages/node/7289790, and because the affected range ends at 10.6.0.10, upgrading to the fixed 10.6.0.x build named in that advisory is the definitive remediation - no version number should be assumed beyond what IBM publishes. No configuration toggle is documented as removing the flaw, so patching is required rather than optional hardening. Where an immediate upgrade is not feasible, the highest-value compensating control is to confine the DataPower Web UI management interface to trusted administrative networks, a jump host, or a VPN and to block it from general user and internet-reachable segments; the trade-off is that this does not protect against an attacker who is already inside that management segment, and it changes how admins reach the console. Second, shorten Web UI idle and absolute session timeouts and require re-authentication where configurable, so any captured session material has a narrow usable window - at the cost of more frequent operator logins. Third, direct administrators to treat unexpected links, emails, or requests that target the appliance console as hostile and to log out of the Web UI when finished, and to use a dedicated browser profile for administration so a malicious page cannot ride an authenticated console session. A restrictive Content-Security-Policy can mitigate XSS generally, but it can only be applied if the appliance or a fronting reverse proxy supports header injection and should be validated in a test environment first, since aggressive CSP rules can break legitimate Web UI functionality.

Affected VersionsENISA

DataPower Gateway 10.6.0 10.6.0.0 ≤10.6.0.10

Affected Packages

euvd datapower_gateway_10_6_0 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation, i.e. cross-site scripting) in the web-based management interface of the IBM DataPower Gateway appliance - the console administrators use to configure services, certificates, and gateway policy. The CVSS vector shows AV:N (reachable over the network), AC:L (no special conditions), PR:N (no attacker credentials required) and UI:R (a logged-in Web UI user must load or click the attacker's crafted content), with S:C meaning the impact crosses a trust boundary into the victim's browser session and the downstream appliance. Confidentiality and integrity are both rated High (C:H/I:H) while availability is not impacted (A:N), which is consistent with script execution that can read rendered data and act with the operator's privileges rather than crashing the service. Because the injection point sits inside a privileged administrative session, script execution can expose session material or perform UI actions as the operator; the practical limiting factor is that the victim must both be authenticated and be lured into interacting with hostile content. Affected CPE data identifies the IBM DataPower Gateway 10.6.0 product line specifically (cpe:2.3:a:ibm:datapower_gateway_10.6.0:*:*:*:*:*:*:*:*).

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (ibm) PRIMARY 9.3 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
vuln.today AI 9.3 CRITICAL

Unauthenticated network-reachable XSS (PR:N, AV:N, AC:L) needing victim interaction (UI:R); script in admin session crosses to the application context (S:C) exposing credentials and allowing actions (C:H/I:H), no availability impact.

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

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

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

DescriptionCVE.org

IBM DataPower Gateway 10.6.0.0 through 10.6.0.10 is vulnerable to cross-site scripting. This vulnerability allows an unauthenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Executive ViewAI

Why It Matters

IBM DataPower Gateway 10.6.0 (builds 10.6.0.0 through 10.6.0.10) carries a critical flaw in its Web management UI that can let an attacker hijack the browser session of a logged-in operator, exposing the privileged credentials used to administer gateway, API, and certificate infrastructure. The people at risk are the small set of administrators whose sessions control enterprise traffic flow and security policy, so a single successful lure could give an outside party the same access as a trusted operator. No public exploit has been identified at time of analysis and a vendor patch is available, making this a manageable but time-sensitive remediation priority.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.3%
Top 78% exploitable
Prevalence
Medium
enterprise IBM integration/security appliance, common but not ubiquitous
Data Quality
4 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 0.3%
Patch available Yes
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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