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CVE-2020-8118

An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local...

5.0 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

1.29%Up 0.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.0

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.

Record
CVE-2020-8118
CVSS 3.1
5.0 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:P/I:N/A:N
Weakness
CWE-918
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2020-8118
Weakness
CWE-918
Updated
2026-11-02
EUVDEUVD-2020-29028 No score

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.

Record
EUVD-2020-29028
Updated
2026-11-03
GitHub AdvisoriesGHSA-gwpm-3v8h-j4wh No score

An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local...

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.

Record
GHSA-gwpm-3v8h-j4wh
Weakness
CWE-918
Updated
2026-11-02
OSV 5.0

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.

Record
CVE-2020-8118
CVSS 3.1
5.0 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2020:0220-1 No score

Security update for nextcloud

This update for nextcloud fixes the following issues:

Nextcloud was updated to 15.0.14:

  • NC-SA-2020-002, CVE-2019-15613: workflow rules to depend their behaviour on the file extension when checking file mimetypes (boo#1162766)
  • NC-SA-2019-016, CVE-2019-15623: Exposure of Private Information caused the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled (boo#1162775)
  • NC-SA-2019-015, CVE-2019-15624: Improper Input Validation allowed group admins to create users with IDs of system folders (boo#1162776)
  • NC-SA-2019-012, CVE-2020-8119: Improper authorization caused leaking of previews and files when a file-drop share link is opened via the gallery app (boo#1162781)
  • NC-SA-2019-014, CVE-2020-8118: An authenticated server-side request forgery allowed to detect local and remote services when adding a new subscription in the calendar application (boo#1162782)
  • NC-SA-2020-012, CVE-2019-15621: Improper permissions preservation causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link (boo#1162784)
  • To many changes. For detail see: https://nextcloud.com/changelog/

nextcloud was updated to 13.0.12:

Record
openSUSE-SU-2020:0220-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:0229-1 No score

Security update for nextcloud

This update for nextcloud fixes the following issues:

Nextcloud was updated to 15.0.14:

  • NC-SA-2020-002, CVE-2019-15613: workflow rules to depend their behaviour on the file extension when checking file mimetypes (boo#1162766)
  • NC-SA-2019-016, CVE-2019-15623: Exposure of Private Information caused the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled (boo#1162775)
  • NC-SA-2019-015, CVE-2019-15624: Improper Input Validation allowed group admins to create users with IDs of system folders (boo#1162776)
  • NC-SA-2019-012, CVE-2020-8119: Improper authorization caused leaking of previews and files when a file-drop share link is opened via the gallery app (boo#1162781)
  • NC-SA-2019-014, CVE-2020-8118: An authenticated server-side request forgery allowed to detect local and remote services when adding a new subscription in the calendar application (boo#1162782)
  • NC-SA-2020-012, CVE-2019-15621: Improper permissions preservation causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link (boo#1162784)
  • To many changes. For detail see: https://nextcloud.com/changelog/

nextcloud was updated to 13.0.12:

This update was imported from the openSUSE:Leap:15.1:Update update project.

Record
openSUSE-SU-2020:0229-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
nextcloud
SUSE:Package Hub 12
before 15.0.14-bp151.3.3.1
15.0.14-bp151.3.3.1
nextcloud
SUSE:Package Hub 15
before 15.0.14-bp151.3.3.1
15.0.14-bp151.3.3.1
nextcloud
SUSE:Package Hub 15 SP1
before 15.0.14-bp151.3.3.1
15.0.14-bp151.3.3.1
nextcloud
openSUSE:Leap 15.1
before 15.0.14-bp151.3.3.1
15.0.14-bp151.3.3.1
nextcloud
SUSE:Package Hub 15 SP1
before 15.0.14-bp151.3.6.1
15.0.14-bp151.3.6.1

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-8118 is a medium vulnerability (CVSS 5.0) in Hackerone Nextcloud Server, published February 4, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.29%, the 70th percentile. Fixed in nextcloud 15.0.14-bp151.3.3.1.

References

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