How severe is CVE-2017-16871?

CVE-2017-16871 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-16871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16871?

CVE-2017-16871 affects Updraftplus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16871?

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-2017-16871 published?

CVE-2017-16871 was published on 2017-11-17 and last updated on 2026-06-17.

CVE-2017-16871

CVE-2017-16871 is a high-severity vulnerability in Updraftplus with a CVSS 3.x base score of 8.1. 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-94.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Updraftplus
Published: 2017-11-17
Last modified: 2026-06-17

Description

The UpdraftPlus plugin through 1.13.12 for WordPress allows remote PHP code execution because the plupload_action function in /wp-content/plugins/updraftplus/admin.php has a race condition before deleting a file associated with the name parameter. NOTE: the vendor reports that this does not cross a privilege boundary

Frequently asked questions

What is CVE-2017-16871?: The UpdraftPlus plugin through 1.13.12 for WordPress allows remote PHP code execution because the plupload_action function in /wp-content/plugins/updraftplus/admin.php has a race condition before deleting a file associated with the name parameter. NOTE: the vendor reports that this does not cross a privilege boundary
How severe is CVE-2017-16871?: CVE-2017-16871 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-16871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16871?: CVE-2017-16871 affects Updraftplus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16871?: 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-2017-16871 published?: CVE-2017-16871 was published on 2017-11-17 and last updated on 2026-06-17.

References

https://github.com/LoRexxar/CVE_Request/tree/master/wordpress%20plugin%20updraftplus%20vulnerablity#authenticated--upload-file-and-php-code-execution

Affected products (1)

cpe:2.3:a:updraftplus:updraftplus:*:*:*:*:*:wordpress:*:*

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