CVE-2021-39036Network attack vector

Credential disclosure via Web UI script injection

Published May 12, 2023 · Updated Feb 13, 2025

Cross-site scripting in IBM Cognos Analytics 11.1 and 11.2 allows remote attackers to execute arbitrary JavaScript in its Web UI. IBM identifies the Web UI as the injection surface but does not disclose the affected route, field, or missing neutralization operation. Execution requires a user to view the injected content, after which script runs in a trusted session and can disclose credentials.

CVSS severity6.1
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in IBM Cognos Analytics 11.1 and 11.2 allows remote attackers to execute arbitrary JavaScript in its Web UI. IBM identifies the Web UI as the injection surface but does not disclose the affected route, field, or missing neutralization operation. Execution requires a user to view the injected content, after which script runs in a trusted session and can disclose credentials.

The record

CVE
CVE-2021-39036
Published
May 12, 2023
Updated
Feb 13, 2025
Vendor
IBM
Product
Cognos Analytics
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=11.1, 11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Cognos Analyticsversion=11.1, 11.2

Published CVSS scores

6.1IBM CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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