Skip to content
Fencer Vulns
medium 6.7

CVE-2020-8296 json

Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage is not configured.

published 2021-03-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29164

cvss
6.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage is not configured.

Patch / fix

  • nextcloud nextcloud_server 20.0.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8296 updated

nextcloud: Passwords stored in a recoverable format

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/867164 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/nextcloud/server/issues/17439 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a Nextcloud Server

Classification

Weakness
  • CWE-257 Storing Passwords in a Recoverable Format
  • CWE-521 Weak Password Requirements

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.