How severe is CVE-2026-22678?

CVE-2026-22678 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-22678 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22678?

CVE-2026-22678 affects Webmin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22678?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-22678 have an EU (EUVD) identifier?

Yes. CVE-2026-22678 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31350.

When was CVE-2026-22678 published?

CVE-2026-22678 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-22678

CVE-2026-22678 is a medium-severity vulnerability in Webmin with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31350
Weakness: CWE-79
Affected product: Webmin
Published: 2026-05-21
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-22678?: 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.
How severe is CVE-2026-22678?: CVE-2026-22678 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-22678 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22678?: CVE-2026-22678 affects Webmin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22678?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22678 have an EU (EUVD) identifier?: Yes. CVE-2026-22678 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31350.
When was CVE-2026-22678 published?: CVE-2026-22678 was published on 2026-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*

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