CVE-2023-43039Network attack vector

Trusted-session script execution via misconfigured CSP header

Published Jul 8, 2025 · Updated Aug 17, 2025

Cross-site scripting in IBM OpenPages with Watson 9.0 allows remote attackers to execute JavaScript in a user's trusted session. A misconfigured Content-Security-Policy response header fails to constrain script embedded through the Web UI, allowing a browser to execute attacker-supplied code. Exploitation requires user interaction; executed script can alter Web UI behavior and expose credentials within that session.

CVSS severity6.1
Medium
EPSS probability0.18%
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 OpenPages with Watson 9.0 allows remote attackers to execute JavaScript in a user's trusted session. A misconfigured Content-Security-Policy response header fails to constrain script embedded through the Web UI, allowing a browser to execute attacker-supplied code. Exploitation requires user interaction; executed script can alter Web UI behavior and expose credentials within that session.

The record

CVE
CVE-2023-43039
Published
Jul 8, 2025
Updated
Aug 17, 2025
Vendor
IBM
Product
OpenPages
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 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=9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · OpenPagesversion=9.0

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.

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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')
T1059.007Command and Scripting Interpreter: JavaScript

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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