CVE-2020-8118 json
An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local and remote services when adding a new subsc…
published 6y ago modified 4mo ago also EUVD-2020-29028
- cvss
- 5.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local and remote services when adding a new subscription in the calendar application.
Patch / fix
- nextcloud nextcloud_server 15.0.9, 16.0.2
- nextcloud Package Hub 15 SP1 15.0.14-bp151.3.6.1
- nextcloud Package Hub 15 SP1, Package Hub 15, Package Hub 12 +1 more 15.0.14-bp151.3.3.1
opensuse advisories openSUSE-SU-2020:0229-1openSUSE-SU-2020:0220-1
Is CVE-2020-8118 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2020-8118 updated
nextcloud: Several CVEs fixed in nextcloud 15, 16 and 17
-
Red Hat All currently supported Red Hat productsnot 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
1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- hackerone.com https://hackerone.com/reports/427835 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- n/a Nextcloud Server
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
hackerone.com
/reports/427835
exploit, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00019.html
vendor-advisory, release-notes, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00022.html
vendor-advisory, release-notes, third-party-advisory
-
nextcloud.com
/security/advisory/?id=NC-SA-2019-014
vendor-advisory
Sources
- CVE List CVE-2020-8118
- NVD CVE-2020-8118
Fencer Intel 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.