CVE-2020-8159

There is a vulnerability in actionpack_page-caching gem < v1.2.1 that ...

Published 12 May 2020Modified 17 Jun 2026CWE 22

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA, Ruby Advisory DB.

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.

Affected packages and fixed versions

Source	Package	Fixed in
rubygems::GitHub Security Advisory RubyGems	actionpack-page_caching	1.2.1
rubygems::Ruby Advisory Database	actionpack-page_caching	>= 1.2.1
debian 10	ruby-actionpack-page-caching	no fix listed
debian 11	ruby-actionpack-page-caching	1.2.2-1
debian 12	ruby-actionpack-page-caching	1.2.2-1
debian 9	ruby-actionpack-page-caching	1.0.2-4+deb9u1
echo	ruby-actionpack-page-caching	1.2.2-1

References

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.