How severe is CVE-2021-36654?

CVE-2021-36654 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-2021-36654 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36654?

CVE-2021-36654 affects Cmsuno Project Cmsuno. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36654?

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

When was CVE-2021-36654 published?

CVE-2021-36654 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-36654

CVE-2021-36654 is a medium-severity vulnerability in Cmsuno Project Cmsuno 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 v2: 3.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Cmsuno Project Cmsuno
Published: 2021-08-03
Last modified: 2026-06-17

Description

CMSuno 1.7 is vulnerable to an authenticated stored cross site scripting in modifying the filename parameter (tgo) while updating the theme.

Frequently asked questions

What is CVE-2021-36654?: CMSuno 1.7 is vulnerable to an authenticated stored cross site scripting in modifying the filename parameter (tgo) while updating the theme.
How severe is CVE-2021-36654?: CVE-2021-36654 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-2021-36654 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36654?: CVE-2021-36654 affects Cmsuno Project Cmsuno. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36654?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36654 published?: CVE-2021-36654 was published on 2021-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cmsuno_project:cmsuno:1.7:*:*:*:*:*:*:*

More vulnerabilities in Cmsuno Project Cmsuno

CVE-2021-40889 — Critical (CVSS 9.8): CMSUno version 1.7.2 is affected by a PHP code execution vulnerability. sauvePass action in {webroot}/uno/central.php…
CVE-2020-25557 — High (CVSS 8.8): In CMSuno 1.6.2, an attacker can inject malicious PHP code as a "username" while changing his/her username & password.…
CVE-2020-25538 — High (CVSS 8.8): An authenticated attacker can inject malicious code into "lang" parameter in /uno/central.php file in CMSuno 1.6.2 and…
CVE-2020-15600 — Medium (CVSS 6.5): An issue was discovered in CMSUno before 1.6.1. uno.php allows CSRF to change the admin password.
CVE-2018-15567 — Medium (CVSS 6.1): CMSUno before 1.5.3 has XSS via the title field.

All CVEs affecting Cmsuno Project Cmsuno →

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