CVE-2020-8163
The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 82.5%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 82.47% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 26 July 2020
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- rubyonrails/rails · debian/debian linux
- Source
- support@hackerone.com
EPSS 82.5% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/158604/Ruby-On-Rails-5.0.1-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://groups.google.com/g/rubyonrails-security/c/hWuKcHyoKh0Mailing List, Patch, Third Party Advisory
- https://hackerone.com/reports/304805Permissions Required, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/158604/Ruby-On-Rails-5.0.1-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://groups.google.com/g/rubyonrails-security/c/hWuKcHyoKh0Mailing List, Patch, Third Party Advisory
- https://hackerone.com/reports/304805Permissions Required, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.htmlMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.