What is CVE-2021-29243?

CVE-2021-29243 is a medium-severity vulnerability in Cloudera Manager, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-08.

How severe is CVE-2021-29243?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-29243 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Cloudera Manager

CVE-2021-29243

Cloudera Manager 5.x, 6.x, 7.1.x, 7.2.x, and 7.3.x allows XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-11-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Cloudera Manager

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

kosmosec/CVE-numbers

References

docs.cloudera.com/documentation/other/security-bulletins/topics/Security-Bullet… (Vendor Advisory)
my.cloudera.com/knowledge/TSB-2021-488-Cloudera-Manager-is-vulnerable-to-Cross-… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-29243?: CVE-2021-29243 is a medium-severity vulnerability in Cloudera Manager, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-08.
How severe is CVE-2021-29243?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-29243 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.