VulnerabilityModified
CVE-2020-8155
An outdated 3rd party library in the Files PDF viewer for Nextcloud Server 18.0.2 caused a Cross-site scripting vulnerability when opening a malicious PDF.
MEDIUM 5.4EPSS 1.14%
Does this matter?
Lower severity and a low EPSS score (1.14%). Track it; it rarely justifies an emergency change on its own.
Description
An outdated 3rd party library in the Files PDF viewer for Nextcloud Server 18.0.2 caused a Cross-site scripting vulnerability when opening a malicious PDF.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.14% probability · 66th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- nextcloud/nextcloud server
- Source
- support@hackerone.com
EPSS 1.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-019Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-019Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.