What is CVE-2021-20526?

CVE-2021-20526 is a medium-severity vulnerability in IBM Planning Analytics, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2021-10-27.

How severe is CVE-2021-20526?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in IBM Planning Analytics

CVE-2021-20526

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.

Published 2021-10-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

IBM Planning Analytics — versions 2.0
IBM Planning Analytics — versions 2.0

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

www.ibm.com/support/pages/node/6507095 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/198755 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20526?: CVE-2021-20526 is a medium-severity vulnerability in IBM Planning Analytics, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2021-10-27.
How severe is CVE-2021-20526?: Medium severity. CVSS v3 base score is 5.3 out of 10.