CVE-2021-32852: Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the com

Q: How do I fix CVE-2021-32852?

countly server: upgrade to 21.11. Exact commands for each OS are on this page.

Q: Is CVE-2021-32852 being exploited?

CVE-2021-32852 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32852 affect?

CVE-2021-32852 affects countly server. Severity is medium (CVSS 5.4). Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the community edition. The victim must follow a malicious link or be redirected there from malicious web site. The attacker must have an

Q: How urgent is CVE-2021-32852?

Priority 39/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2021-32852 is a medium-severity flaw (CVSS 5.4) affecting countly server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the community edition. The victim must follow a malicious link or be redirected there from malicious web site. The attacker must have an account or be able to create one. This issue is patched in version 21.11.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-02-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: count

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-20 22:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

count countly server UPGRADE

Affected: < 21.11

Fixed in: 21.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy countly-server || rpm -q countly-server || countly-server --version

2. UPGRADE to 21.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade countly-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade countly-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32852?

countly server: upgrade to 21.11. Exact commands for each OS are on this page.

Is CVE-2021-32852 being exploited?

CVE-2021-32852 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32852 affect?

CVE-2021-32852 affects countly server. Severity is medium (CVSS 5.4). Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the community edition. The victim must follow a malicious link or be redirected there from malicious web site. The attacker must have an

How urgent is CVE-2021-32852?

Priority 39/100. Public exploit reference

References

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