CVE-2020-8166

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.3% of scored records. A rank, not a probability.

NVD base score

4.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-07-02 18:35Z6 YR AGO

Last updated

2026-04-28 15:45Z6 MO AGO

Reserved

2020-01-28

Assigning CNA

hackerone

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-352Cross-Site Request Forgery (CSRF)Compound

Data version

5.2

Document digest

3fdd83494f5c3b39ef7bb849eb0b0bbb529e8e9ab804d5ae3afcadd53eeba08b

• hackerone.comhttps://hackerone.com/reports/732415x_refsource_MISC
• groups.google.comhttps://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgwx_refsource_MISC
• www.debian.orgDSA-4766https://www.debian.org/security/2020/dsa-4766vendor-advisoryx_refsource_DEBIAN