What is CVE-2017-0886?

CVE-2017-0886 is a medium-severity vulnerability in Nextcloud Server, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2017-04-05.

How severe is CVE-2017-0886?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Nextcloud Server

CVE-2017-0886

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Denial of Service attack. Due to an error in the application logic an authenticated adversary may trigger an endless recursion in the application leading to a potential Denial of Service.

Published 2017-04-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Nextcloud Server — versions All versions before 9.0.55 and 10.0.2
Nextcloud Server

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

nextcloud.com/security/advisory/ (Patch, Broken Link, Vendor Advisory)
hackerone.com/reports/174524 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-0886?: CVE-2017-0886 is a medium-severity vulnerability in Nextcloud Server, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2017-04-05.
How severe is CVE-2017-0886?: Medium severity. CVSS v3 base score is 6.5 out of 10.