Detections
Analytics

CVE-2020-8165

critical

Description

A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.

References

https://www.debian.org/security/2020/dsa-4766

https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html

https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html

https://github.com/advisories/GHSA-2p68-f74v-9wc6

https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/

https://security.netapp.com/advisory/ntap-20250509-0002/

https://hackerone.com/reports/413388

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-0401

Details

Source: Mitre, NVD

Published: 2020-06-19

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.45732