CVE-2021-40238: A Cross Site Scriptiong (XSS) vulnerability exists in the admin panel in Webuzo < 2.9.0 via an HTTP request to

Q: How do I fix CVE-2021-40238?

webuzo: upgrade to 2.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-40238 being exploited?

CVE-2021-40238 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-2021-40238 affect?

CVE-2021-40238 affects webuzo. Severity is medium (CVSS 6.1). A Cross Site Scriptiong (XSS) vulnerability exists in the admin panel in Webuzo < 2.9.0 via an HTTP request to a non-existent page, which is activated by administrators viewing the "Error Log" page. An attacker can leverage this to achieve

Q: How urgent is CVE-2021-40238?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2021-40238 is a medium-severity flaw (CVSS 6.1) affecting webuzo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross Site Scriptiong (XSS) vulnerability exists in the admin panel in Webuzo < 2.9.0 via an HTTP request to a non-existent page, which is activated by administrators viewing the "Error Log" page. An attacker can leverage this to achieve Unauthenticated Remote Code Execution via the "Cron Jobs" functionality of Webuzo.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-09-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: webuzo

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

Am I affected?

Timeline

2021-09-15 17:15 UTCPublished CVE record published
2026-06-17 04:06 UTCUpdated Record last modified

webuzo webuzo UPGRADE

Affected: < 2.9.0

Fixed in: 2.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webuzo || rpm -q webuzo || webuzo --version

2. UPGRADE to 2.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webuzo

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webuzo

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-2021-40238?

webuzo: upgrade to 2.9.0. Exact commands for each OS are on this page.

Is CVE-2021-40238 being exploited?

CVE-2021-40238 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-2021-40238 affect?

CVE-2021-40238 affects webuzo. Severity is medium (CVSS 6.1). A Cross Site Scriptiong (XSS) vulnerability exists in the admin panel in Webuzo < 2.9.0 via an HTTP request to a non-existent page, which is activated by administrators viewing the "Error Log" page. An attacker can leverage this to achieve

How urgent is CVE-2021-40238?

Priority 37/100. No elevated risk signals yet.

Related CVEs

CVE-2024-24623 HIGH 8.8 UPGRADE Softaculous Webuzo contains a command injection vulnerability in the FTP management functionality
CVE-2024-24622 HIGH 8.8 UPGRADE Softaculous Webuzo contains a command injection in the password reset functionality
CVE-2024-24621 CRITICAL 9.8 UPGRADE Softaculous Webuzo contains an authentication bypass vulnerability through the password reset functionality

References

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