Ruby on Rails: Mehrere Schwachstellen
WID-SEC-2026-0833 · first 24.03.2026 · updated 09.10.2026 · CVSS 9,1
What it is about
Ruby on Rails ist ein in der Programmiersprache Ruby geschriebenes und quelloffenes Web Application Framework. Ein Angreifer kann mehrere Schwachstellen in Ruby on Rails ausnutzen, um einen Denial of Service Angriff durchzuführen, um Dateien zu manipulieren, und um einen Cross-Site Scripting Angriff durchzuführen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
- Dateien zu manipulieren
- einen Cross-Site Scripting Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Red Hat Enterprise Linux
- Open Source Ruby on Rails <7.2.3.1
- Open Source Ruby on Rails <8.0.4.1
- Open Source Ruby on Rails <8.1.2.1
- HCL BigFix Compliance <2.0.18
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Ruby on Rails 7.2.3.1
- Open Source Ruby on Rails 8.0.4.1
- Open Source Ruby on Rails 8.1.2.1
- HCL BigFix Compliance 2.0.18
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Rails Release Notes vom 2026-03-23 rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Rails Security Advisory vom 2026-03-23 discuss.rubyonrails.org
- Red Hat Security Advisory RHSA-2026:14874 vom 2026-05-07 access.redhat.com
- Red Hat Security Advisory RHSA-2026:14835 vom 2026-05-07 access.redhat.com
- Red Hat Security Advisory RHSA-2026:14873 vom 2026-05-07 access.redhat.com
- HCL Security Bulletin vom 2026-06-27 support.hcl-software.com
- Debian Security Advisory DSA-6546 vom 2026-10-07 security-tracker.debian.org
- Debian Security Advisory DLA-4829 vom 2026-10-08 lists.debian.org
CVE: CVE-2026-33169, CVE-2026-33174, CVE-2026-33176, CVE-2026-33658, CVE-2026-33173, CVE-2026-33195, CVE-2026-33202, CVE-2026-33167, CVE-2026-33168, CVE-2026-33170
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.