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IBM EUVDEUVD-2026-15989

| CVE-2026-2485 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
4.8
CVSS 3.1 · NVD
View

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.

Impact

The CVSS vector (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N) indicates moderate real-world risk: while the attack vector is network-based with low complexity, the requirement for high privileges (PR:H) and user interaction (UI:R) significantly constrains exploitability. The impact is limited to confidentiality and integrity (C:L/I:L) with no availability impact. Compared to high-CVSS vulnerabilities with lower privilege requirements, this poses less strategic risk to most organizations, though it remains critical in zero-trust or least-privilege environments where privileged account compromise is a primary concern. The availability of a vendor patch and lack of reported active exploitation further reduce immediate risk, though the vulnerability should still be addressed systematically to prevent insider threats and privilege-escalation chains.

Exploit ScenarioDerived

An internal threat actor or compromised high-privileged administrative account injects a malicious JavaScript payload into a stored configuration field or metadata field in Infosphere Information Server. When other administrators or authorized users access the Web UI dashboard, the injected script executes in their browser context within the same trusted session, allowing the attacker to steal session cookies, capture credentials entered into forms, or perform unauthorized actions on behalf of the victim. The requirement for high privileges and user interaction makes this most effective in targeted insider threat scenarios or as a post-compromise persistence mechanism following initial privileged account compromise.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 25, 2026

IBM Infosphere Information Server versions 11.7.0.0 through 11.7.1.6 contain a stored cross-site scripting (XSS) vulnerability in the Web UI that allows privileged users to inject arbitrary JavaScript code, potentially leading to credential disclosure and session compromise. While a vendor patch is available, the attack requires high privileges and user interaction, resulting in a moderate CVSS score of 4.8. This vulnerability does not appear to have active exploitation in the wild or public proof-of-concept code, but should be prioritized for organizations running vulnerable versions in security-sensitive environments.

RemediationAI

Upgrade IBM Infosphere Information Server to version 11.7.1.7 or later, following the vendor's official patch guidance at https://www.ibm.com/support/pages/node/7266765. Organizations unable to patch immediately should implement compensating controls: restrict Web UI access to trusted IP ranges via firewall rules, enforce multi-factor authentication for all privileged accounts to reduce the risk of credential-based exploitation, conduct periodic access reviews to minimize unnecessary high-privilege assignments, and enable web application firewall (WAF) rules to detect and block common XSS payloads in request parameters. Monitor application logs for suspicious JavaScript injection attempts in stored data fields.

Affected VersionsENISA

InfoSphere Information Server 11.7.0.0 ≤11.7.1.6

Affected Packages

euvd infosphere_information_server 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 vulnerability is rooted in CWE-79 (Improper Neutralization of Input During Web Page Generation), a classic stored XSS flaw where user-controlled input is not properly sanitized before being persisted in the application database and subsequently rendered in the Web UI without output encoding. IBM Infosphere Information Server (CPE: cpe:2.3:a:ibm:infosphere_information_server) is an enterprise data integration and governance platform that processes and displays user-supplied data in web-based dashboards and configuration interfaces. The affected versions 11.7.0.0 through 11.7.1.6 fail to implement adequate input validation or output encoding mechanisms in specific Web UI components, allowing an authenticated administrator or high-privileged user to embed malicious JavaScript payloads that execute in the context of other users' trusted sessions.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.8 MEDIUM
AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

2
Patch released
Mar 25, 2026 - 20:32 nvd
Patch available
CVE Published
Mar 25, 2026 - 20:22 nvd
MEDIUM 4.8

DescriptionCVE.org

IBM Infosphere Information Server 11.7.0.0 through 11.7.1.6 is vulnerable to stored cross-site scripting. This vulnerability allows a privileged 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

Organizations using IBM Infosphere Information Server 11.7.0.0 through 11.7.1.6 should be aware of moderate risk from CVE-2026-2485, a cross-site scripting vulnerability rated CVSS 4.8. Attackers could inject scripts to steal sessions or perform actions as authenticated users. A patch is available and should be applied during regular vulnerability management.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.

Threat Intelligence Overview

EPSS Score
0.0%
Top 94% exploitable
Data Quality
5 sources
Confidence: Medium
EUVD NVD CVE.org EPSS Vulnrichment GitHub VulDB

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Low
Technical Impact
Partial

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +24
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.

References

Advisories & patches
PATCH https://www.ibm.com/support/pages/node/7266765 ADVISORY https://csrc.nist.gov/pubs/fips/204/final ADVISORY https://datatracker.ietf.org/doc/html/rfc9881 ADVISORY https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ADVISORY https://github.com/C2SP/wycheproof ADVISORY https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_44_verify_test.json ADVISORY https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_65_verify_test.json ADVISORY https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_87_verify_test.json ADVISORY https://github.com/RustCrypto/signatures/commit/400961412be2e2ab787942cf30e0a9b66b37a54a ADVISORY https://github.com/RustCrypto/signatures/commit/b01c3b73dd08d0094e089aa234f78b6089ec1f38 ADVISORY https://github.com/RustCrypto/signatures/issues/894 ADVISORY https://github.com/RustCrypto/signatures/pull/895 ADVISORY https://github.com/RustCrypto/signatures/security/advisories/GHSA-5x2r-hc65-25f9 ADVISORY https://github.com/openfga/openfga/commit/1bb5eddf4a3d2fc718aab7914b8f9a1200d2f7ee ADVISORY https://github.com/openfga/openfga/releases/tag/v1.11.3 ADVISORY https://github.com/openfga/openfga/security/advisories/GHSA-jq9f-gm9w-rwm9 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-24850 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-24851 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-24858 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-24859 ADVISORY https://vuldb.com/vuln/353490 ADVISORY https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858 ADVISORY https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios

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