CVE-2020-4873Network attack vector

Sensitive information exposure via permissive CORS policy

Published Jan 19, 2021 · Updated Sep 17, 2024

Information disclosure in IBM Planning Analytics 2.0 allows remote attackers to read sensitive data through an overly permissive CORS policy. The Planning Analytics Workspace component accepts cross-origin API access beyond the intended same-origin boundary, allowing an untrusted origin to read responses. No authentication or user interaction is required, and the reported impact is limited to confidentiality; IBM has not disclosed which API responses expose sensitive data.

CVSS severity5.3
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in IBM Planning Analytics 2.0 allows remote attackers to read sensitive data through an overly permissive CORS policy. The Planning Analytics Workspace component accepts cross-origin API access beyond the intended same-origin boundary, allowing an untrusted origin to read responses. No authentication or user interaction is required, and the reported impact is limited to confidentiality; IBM has not disclosed which API responses expose sensitive data.

The record

CVE
CVE-2020-4873
Published
Jan 19, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Planning Analytics
Classifications
CWE-863
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Planning Analyticsversion=2.0

Published CVSS scores

5.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.6IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

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-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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