How severe is CVE-2021-34639?

CVE-2021-34639 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34639?

CVE-2021-34639 affects W3eden Download Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-34639 published?

CVE-2021-34639 was published on 2021-08-05 and last updated on 2026-06-17.

CVE-2021-34639

CVE-2021-34639 is a high-severity vulnerability in W3eden Download Manager with a CVSS 3.x base score of 7.5. 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 6.5
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: W3eden Download Manager
Published: 2021-08-05
Last modified: 2026-06-17

Description

Authenticated File Upload in WordPress Download Manager <= 3.1.24 allows authenticated (Author+) users to upload files with a double extension, e.g. "payload.php.png" which is executable in some configurations. This issue affects: WordPress Download Manager version 3.1.24 and prior versions.

Frequently asked questions

What is CVE-2021-34639?: Authenticated File Upload in WordPress Download Manager <= 3.1.24 allows authenticated (Author+) users to upload files with a double extension, e.g. "payload.php.png" which is executable in some configurations. This issue affects: WordPress Download Manager version 3.1.24 and prior versions.
How severe is CVE-2021-34639?: CVE-2021-34639 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34639?: CVE-2021-34639 affects W3eden Download Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-34639 published?: CVE-2021-34639 was published on 2021-08-05 and last updated on 2026-06-17.

References

https://www.wordfence.com/blog/2021/07/wordpress-download-manager-vulnerabilities/

Affected products (1)

cpe:2.3:a:w3eden:download_manager:*:*:*:*:*:wordpress:*:*

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