CVE-2026-22678: Webmin before 2.641 contains a stored cross-site scripting vulnerability in the email template description fie

Q: How do I fix CVE-2026-22678?

webmin: upgrade to 2.641. Exact commands for each OS are on this page.

Q: Is CVE-2026-22678 being exploited?

CVE-2026-22678 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-2026-22678 affect?

CVE-2026-22678 affects webmin. Severity is medium (CVSS 5.4). Webmin before 2.641 contains a stored cross-site scripting vulnerability in the email template description field of the System and Server Status module that allows low-privileged authenticated attackers to execute arbitrary JavaScript in th

Q: How urgent is CVE-2026-22678?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-22678 is a medium-severity flaw (CVSS 5.4) affecting webmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Webmin before 2.641 contains a stored cross-site scripting vulnerability in the email template description field of the System and Server Status module that allows low-privileged authenticated attackers to execute arbitrary JavaScript in the browser context of administrators by injecting unsanitized input stored in save_tmpl.cgi and rendered unescaped in list_tmpls.cgi.

Why this priority

No elevated risk signals yet

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	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-21
Last modified	2026-07-23

Publisher (CNA): VulnCheck · Vendor: webmin

Last updated 2026-07-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-21 22:16 UTCPublished CVE record published
2026-07-23 16:10 UTCUpdated Record last modified

webmin webmin UPGRADE

Affected: < 2.641

Fixed in: 2.641

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.641 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webmin

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-2026-22678?

webmin: upgrade to 2.641. Exact commands for each OS are on this page.

Is CVE-2026-22678 being exploited?

CVE-2026-22678 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-2026-22678 affect?

CVE-2026-22678 affects webmin. Severity is medium (CVSS 5.4). Webmin before 2.641 contains a stored cross-site scripting vulnerability in the email template description field of the System and Server Status module that allows low-privileged authenticated attackers to execute arbitrary JavaScript in th

How urgent is CVE-2026-22678?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2026-56022 MEDIUM 5.3 UPGRADE Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin'
CVE-2026-56021 MEDIUM 5.3 UPGRADE Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directo

References

← Back to latest CVEs