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CVE Record

CVE-2021-20526: IBM Planning Analytics 2.0 could allow a remote attacker to obtain sensitive information, caused by the fai...

IBM Planning Analytics 2.0 could allow a remote attacker to obtain sensitive information, caused by the failure to set the HTTPOnly flag. A remote attacker could exploit this vulnerability to obtain sensitive information from the cookie. IBM X-Force ID: 198755.

LowCVSS 3.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

IBM Planning Analytics 2.0 has a cookie security weakness: a cookie may be set without the HTTPOnly flag. If an attacker can meet the high-complexity conditions, they could obtain sensitive cookie information. The reported severity is low, but affected deployments should still be remediated because cookies can relate to user sessions.

Executive priority

Handle through normal vulnerability management, with higher priority for internet-exposed or high-value analytics environments. The business risk is limited sensitive-cookie disclosure, not system takeover, based on the provided sources.

Technical view

CVE-2021-20526 affects IBM Planning Analytics 2.0. The issue is failure to set the HTTPOnly flag on a cookie, allowing remote sensitive-information disclosure from that cookie. CVSS v3.0 is 3.7 with network attack vector, no privileges, no user interaction, high complexity, and low confidentiality impact.

Likely exposure

Exposure is limited to organizations running IBM Planning Analytics 2.0. The source bundle does not identify other IBM products, specific builds, deployment modes, or public routes. Internet-facing Planning Analytics services would deserve faster review than internal-only instances.

Exploitation context

The supplied sources do not show active exploitation. CISA KEV status is false, and the CVSS temporal vector marks exploit maturity as unproven. Attack complexity is high, so this is not presented as an urgent mass-exploitation issue from the available evidence.

Researcher notes

The bundle lacks fixed-version details, affected component names, cookie names, and proof-of-concept evidence. Avoid broad product assumptions. Validation should focus on Planning Analytics 2.0 cookie behavior and vendor advisory alignment, without attempting session theft.

Mitigation direction

  • Identify all IBM Planning Analytics 2.0 deployments.
  • Review IBM advisory 6507095 for the applicable fix or remediation.
  • Apply IBM-supported updates or configuration guidance where applicable.
  • Reduce external exposure to Planning Analytics management and application interfaces.
  • Monitor IBM X-Force entry 198755 for updated remediation details.

Validation and detection

  • Confirm deployed IBM Planning Analytics versions and builds.
  • Check Set-Cookie headers for missing HTTPOnly attributes.
  • Compare findings against IBM advisory guidance.
  • Review access logs for unusual session activity around exposed Planning Analytics services.
  • Document any compensating controls for systems awaiting vendor remediation.
Prepared
Confidence
medium
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-2021-20526 mapping review

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Vulnerability profileCVE Program record
Severity
Low
CVSS
3.7 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/PR:N/S:U/I:N/C:L/A:N/UI:N/AC:H/E:U/RL:O/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
3.7CVSS 3.0LowCVSS:3.0/AV:N/PR:N/S:U/I:N/C:L/A:N/UI:N/AC:H/E:U/RL:O/RC:C2.21.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

3.7Low
CVSS 3.0 vector shape for CVE-2021-20526Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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