CVE-2020-8165
9.8
CRITICAL · CVSS 3.1 · EPSS 45.7% (pctl 99)
Patch early
EPSS 45.7% — above the 10% action threshold.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 45.73% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-06-19 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| debian | debian linux |
| opensuse | leap |
| rubyonrails | rails |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
- https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
- https://hackerone.com/reports/413388
- https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/
- https://www.debian.org/security/2020/dsa-4766
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
- https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
- https://hackerone.com/reports/413388
- https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
- https://security.netapp.com/advisory/ntap-20250509-0002/
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/
- https://www.debian.org/security/2020/dsa-4766
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