How severe is CVE-2021-47738?

CVE-2021-47738 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-2021-47738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47738?

CVE-2021-47738 affects Cszcms Csz Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47738?

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

Does CVE-2021-47738 have an EU (EUVD) identifier?

Yes. CVE-2021-47738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204825.

When was CVE-2021-47738 published?

CVE-2021-47738 was published on 2025-12-23 and last updated on 2026-06-17.

CVE-2021-47738

CVE-2021-47738 is a medium-severity vulnerability in Cszcms Csz Cms 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% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204825
Weakness: CWE-79
Affected product: Cszcms Csz Cms
Published: 2025-12-23
Last modified: 2026-06-17

Description

CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard.

Frequently asked questions

What is CVE-2021-47738?: CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard.
How severe is CVE-2021-47738?: CVE-2021-47738 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-2021-47738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47738?: CVE-2021-47738 affects Cszcms Csz Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-47738 have an EU (EUVD) identifier?: Yes. CVE-2021-47738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204825.
When was CVE-2021-47738 published?: CVE-2021-47738 was published on 2025-12-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cszcms:csz_cms:1.2.7:*:*:*:*:*:*:*

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