CVE-2021-40191

CVE-2021-40191 is a medium-severity vulnerability in Dzzoffice 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

Description

Dzzoffice Version 2.02.1 is affected by cross-site scripting (XSS) due to a lack of sanitization of input data at all upload functions in webroot/dzz/attach/Uploader.class.php and return a wrong response in content-type of output data in webroot/dzz/attach/controller.php.

Frequently asked questions

What is CVE-2021-40191?
Dzzoffice Version 2.02.1 is affected by cross-site scripting (XSS) due to a lack of sanitization of input data at all upload functions in webroot/dzz/attach/Uploader.class.php and return a wrong response in content-type of output data in webroot/dzz/attach/controller.php.
How severe is CVE-2021-40191?
CVE-2021-40191 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-2021-40191 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40191?
CVE-2021-40191 affects Dzzoffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40191?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40191 published?
CVE-2021-40191 was published on 2021-10-11 and last updated on 2026-06-17.

References

Affected products (1)

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