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CVE Record

CVE-2021-20477: IBM Planning Analytics 2.0 is vulnerable to cross-site scripting.

IBM Planning Analytics 2.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 196949.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Planning Analytics 2.0 has a medium-severity web interface flaw that can let an authenticated user place JavaScript into the application. If another trusted user interacts with it, the script could change page behavior or expose credentials within that session.

Executive priority

Treat as a scheduled but real remediation item. It is not marked as actively exploited, but it can affect credentials and trusted financial planning workflows if an attacker has user access.

Technical view

The issue is cross-site scripting in IBM Planning Analytics 2.0 Web UI. The CVSS 3.0 score is 5.4, with network attack vector, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, and no availability impact.

Likely exposure

Exposure is limited to environments running IBM Planning Analytics 2.0, especially where the Web UI is reachable by many internal users or externally accessible authenticated users.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires access to the Web UI, low privileges, and user interaction, so risk is mainly authenticated session abuse rather than unauthenticated compromise.

Researcher notes

Evidence supports an authenticated, user-interaction XSS in IBM Planning Analytics 2.0. The bundle names IBM X-Force ID 196949 but does not provide exploit details, affected subcomponents, or a specific fixed build in the provided text.

Mitigation direction

  • Review IBM advisory for the fixed Planning Analytics 2.0 level and apply vendor guidance.
  • Restrict Web UI access to trusted users and networks where operationally possible.
  • Review user roles and remove unnecessary low-privilege access.
  • Increase monitoring for unexpected Web UI content or credential-related alerts.

Validation and detection

  • Inventory IBM Planning Analytics 2.0 deployments and exposed Web UI endpoints.
  • Compare installed versions against the IBM advisory and X-Force entry.
  • Confirm whether the affected Web UI is reachable from untrusted networks.
  • Review logs for suspicious content changes or anomalous authenticated activity.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-20477 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/I:L/S:C/AC:L/C:L/AV:N/UI:R/PR:L/A:N/RL:O/E:H/RC:C

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.0MediumCVSS:3.0/I:L/S:C/AC:L/C:L/AV:N/UI:R/PR:L/A:N/RL:O/E:H/RC:C2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2021-20477Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/I:L/S:C/AC:L/C:L/AV:N/UI:R/PR:L/A:N/RL:O/E:H/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMPlanning Analytics2.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.