How severe is CVE-2021-20477?

CVE-2021-20477 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20477?

CVE-2021-20477 affects Ibm Planning Analytics. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20477?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20477 published?

CVE-2021-20477 was published on 2021-06-29 and last updated on 2026-06-17.

CVE-2021-20477

CVE-2021-20477 is a medium-severity vulnerability in Ibm Planning Analytics with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Planning Analytics
Published: 2021-06-29
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-20477?: 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.
How severe is CVE-2021-20477?: CVE-2021-20477 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20477?: CVE-2021-20477 affects Ibm Planning Analytics. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20477?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20477 published?: CVE-2021-20477 was published on 2021-06-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:planning_analytics:2.0:*:*:*:*:*:*:*

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