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CVE-2020-8159
There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server,…
Critical9.8EPSS 5.4%
- Published
- Updated
- Reserved
- Assigned by
- hackerone
Description
There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 5.4% · top 7.3% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
https://github.com/rails/actionpack-page_caching
- affected v1.2.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsactionpack-page_cachingGHSA-mg5p-95m9-rmfp (opens in a new tab)
References (2)
- https://groups.google.com/forum/#%21topic/rubyonrails-security/CFRVkEytdP8 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20210723 [SECURITY] [DLA 2719-1] ruby-actionpack-page-caching security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mg5p-95m9-rmfp (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-8159)Record last updated .