CVE catalog

CVE-2026-33167

Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1 branch prior to 8.1.2.1, the debug exceptions page does not properly escape exception messages. A

[CVE catalog]

Severity: Medium · CVSS 5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Published: Mar 23, 2026, 10:58:53 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.26% · Oct 25, 2026

Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1 branch prior to 8.1.2.1, the debug exceptions page does not properly escape exception messages. A carefully crafted exception message could inject arbitrary HTML and JavaScript into the page, leading to XSS. This affects applications with detailed exception pages enabled (`config.consider_all_requests_local = true`), which is the default in development. Version 8.1.2.1 contains a patch.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	rails	sid	`2:7.2.4+dfsg-2`	not affected
Debian	rails	forky	`2:7.2.4+dfsg-1`	not affected
Debian	rails	trixie	`2:7.2.2.2+dfsg-2~deb13u1`	not affected
Debian	rails	trixie-security	`2:7.2.2.2+dfsg-2~deb13u2`	not affected
Debian	rails	bookworm	`2:6.1.7.10+dfsg-1~deb12u2`	not affected
Debian	rails	bookworm-security	`2:6.1.7.10+dfsg-1~deb12u3`	not affected
Rubygems	actionpack	Not reported	`8.1.2.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	rails	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	rails	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	rails	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	rails	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Rubygems	actionpack	rubygems	Not reported	`8.1.2.1`	Not reported	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[rails]Not affected
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actioncable]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actionmailbox]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actionmailer]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actionpack]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actiontext]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-actionview]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-activejob]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-activemodel]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-activerecord]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-activestorage]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-activesupport]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-rails]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
[ruby-railties]Not affected
Source package: [rails]
Details (4)
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm
- 2:6.1.7.10+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  nvd · rails · debian · bookworm

Observed: Oct 27, 2026, 8:03:50 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]