CVE-2020-8264

Name	CVE-2020-8264
Description	In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allowing an attacker to send or embed (in another page) a specially crafted URL which can allow the attacker to execute JavaScript in the context of the local application. This vulnerability is in the Actionable Exceptions middleware.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs	971988

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rails (PTS)	buster	2:5.2.2.1+dfsg-1+deb10u3	fixed
	buster (security)	2:5.2.2.1+dfsg-1+deb10u5	fixed
	bullseye (security), bullseye	2:6.0.3.7+dfsg-2+deb11u2	fixed
	bookworm, sid	2:6.1.7.3+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
rails	source	stretch	(not affected)
rails	source	buster	(not affected)
rails	source	(unstable)	2:6.0.3.4+dfsg-1	971988

Notes

[buster] - rails <not-affected> (Vulnerable code not present)
[stretch] - rails <not-affected> (Vulnerable code not present)
https://groups.google.com/g/rubyonrails-security/c/yQzUVfv42jk/m/oJWw-xhNAQAJ