What is CVE-2017-16870?

CVE-2017-16870 is a high-severity vulnerability in Updraftplus, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.1/10. Published 2017-11-17.

How severe is CVE-2017-16870?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2017-16870 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Updraftplus

CVE-2017-16870

The UpdraftPlus plugin through 1.13.12 for WordPress has SSRF in the updraft_ajax_handler function in /wp-content/plugins/updraftplus/admin.php via an httpget subaction. NOTE: the vendor reports that this does not cross a privilege boundary

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2017-11-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (59.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Updraftplus

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

github.com/LoRexxar/CVE_Request/tree/master/wordpress plugin updraftplus vulner… (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-16870?: CVE-2017-16870 is a high-severity vulnerability in Updraftplus, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.1/10. Published 2017-11-17.
How severe is CVE-2017-16870?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2017-16870 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.