CVE-2026-34785
Fixed in a distro release EPSS <1%CVSS 7.5
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static determines whether a request should be served as a static file using a simple string prefix check. When configured with URL prefixes such as "/css", it matches any request path that begins with that string, including unrelated paths such as "/css-config.env" or "/css-backup.sql". As a result, files under the static root whose names merely share the configured prefix may be served unintentionally, leading to information disclosure. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Products: Rack, Red Hat Satellite 6
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| RubyGems | rack | 2.2.23 |
| RubyGems | rack | 3.1.21 |
| RubyGems | rack | 3.2.6 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | gitlab-exporter-18.10 | 18.10.3-r0 |
| Chainguard | gitlab-exporter-18.7 | no fix |
| Chainguard | gitlab-exporter-18.8 | 18.8.9-r0 |
| Chainguard | gitlab-exporter-18.9 | 18.9.5-r0 |
| Chainguard | gitlab-rails-ce-18.1 | 18.1.6-r13 |
| Chainguard | gitlab-rails-ce-18.10 | 18.10.4-r0 |
| Chainguard | gitlab-rails-ce-18.2 | no fix |
| Chainguard | gitlab-rails-ce-18.3 | no fix |
| Chainguard | gitlab-rails-ce-18.4 | no fix |
| Chainguard | gitlab-rails-ce-18.5 | no fix |
| Chainguard | gitlab-rails-ce-18.6 | no fix |
| Chainguard | gitlab-rails-ce-18.7 | no fix |
| Chainguard | gitlab-rails-ce-18.8 | 18.8.10-r0 |
| Chainguard | gitlab-rails-ce-18.9 | 18.9.6-r0 |
| Chainguard | gitlab-rails-ce-fips-18.1 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.10 | 18.10.4-r0 |
| Chainguard | gitlab-rails-ce-fips-18.2 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.3 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.4 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.5 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.6 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.7 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.8 | 18.8.10-r0 |
| Chainguard | gitlab-rails-ce-fips-18.9 | 18.9.6-r0 |
| Chainguard | kube-fluentd-operator | 1.18.2-r60 |
| Chainguard | kube-fluentd-operator | 1.18.2-r67 |
| Chainguard | logstash-8.17 | no fix |
| Chainguard | logstash-8.17-iamguarded-compat | no fix |
| Chainguard | logstash-8.17-with-output-opensearch | no fix |
| Chainguard | logstash-8.18 | no fix |
| Chainguard | logstash-8.18-iamguarded-compat | no fix |
| Chainguard | logstash-8.18-with-output-opensearch | no fix |
| Chainguard | logstash-8.19 | 8.19.14-r3 |
| Chainguard | logstash-8.19-iamguarded-compat | 8.19.14-r3 |
| Chainguard | logstash-8.19-with-output-opensearch | 8.19.14-r3 |
| Chainguard | logstash-9.0 | 9.0.8-r20 |
| Chainguard | logstash-9.0-iamguarded-compat | 9.0.8-r20 |
| Chainguard | logstash-9.0-with-output-opensearch | 9.0.8-r20 |
| Chainguard | logstash-9.1 | 9.1.10-r6 |
| Chainguard | logstash-9.1-bitnami-compat | 9.1.10-r6 |
| Chainguard | logstash-9.1-iamguarded-compat | 9.1.10-r6 |
| Chainguard | logstash-9.1-with-output-opensearch | 9.1.10-r6 |
| Chainguard | logstash-9.2 | 9.2.8-r2 |
| Chainguard | logstash-9.2-iamguarded-compat | 9.2.8-r2 |
| Chainguard | logstash-9.2-with-output-opensearch | 9.2.8-r2 |
| Chainguard | logstash-9.3 | 9.3.3-r2 |
| Chainguard | logstash-9.3-iamguarded-compat | 9.3.3-r2 |
| Chainguard | logstash-9.3-with-output-opensearch | 9.3.3-r2 |
| Chainguard | pact-broker-docker | 2.137.0.2.118.0-r4 |
| Chainguard | pact-broker-docker-fips | 2.137.0.2.118.0-r2 |
| Chainguard | ruby3.2-rack-2.2 | 2.2.23-r0 |
| Chainguard | ruby3.2-rails-7.2 | 7.2.3.1-r2 |
| Chainguard | ruby3.2-rails-7.2 | 7.2.3.1-r1 |
| Chainguard | ruby3.2-rails-8.0 | 8.0.5-r0 |
| Chainguard | ruby3.3-rack-2.2 | 2.2.22-r0 |
| Chainguard | ruby3.3-rack-2.2 | 2.2.23-r0 |
| Chainguard | ruby3.4-rack-2.2 | 2.2.23-r0 |
| Chainguard | ruby3.4-rails-7.2 | 7.2.3.1-r1 |
| Chainguard | ruby3.4-rails-8.0 | 8.0.5-r1 |
| Chainguard | ruby3.4-rails-8.0 | 8.0.5-r2 |
| Chainguard | ruby4.0-rack-2.2 | 2.2.23-r0 |
| Debian 12 | ruby-rack | 2.2.22-0+deb12u2 |
| Debian 13 | ruby-rack | 3.1.20-0+deb13u2 |
| Debian 14 | ruby-rack | 3.2.6-2 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Server 16.0 | rmt-server | 3.1.0-160000.1.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | rmt-server | 2.27-150500.3.47.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | rmt-server | 3.1.0-160000.1.1 |
| Ubuntu 24.04 LTS | ruby-rack | 2.2.7-1ubuntu0.7 |
| Ubuntu 25.10 | ruby-rack | 3.1.16-0.1ubuntu0.3 |
| Ubuntu 26.04 LTS | ruby-rack | no fix |
| Ubuntu Pro 14.04 LTS | ruby-rack | 1.5.2-3+deb8u3ubuntu1~esm11 |
| Ubuntu Pro 16.04 LTS | ruby-rack | 1.6.4-3ubuntu0.2+esm10 |
| Ubuntu Pro 18.04 LTS | ruby-rack | 1.6.4-4ubuntu0.2+esm10 |
| Ubuntu Pro 20.04 LTS | ruby-rack | 2.0.7-2ubuntu0.1+esm10 |
| Ubuntu Pro 22.04 LTS | ruby-rack | 2.1.4-5ubuntu1.2+esm3 |
| Wolfi | kube-fluentd-operator | 1.18.2-r67 |
| Wolfi | kube-fluentd-operator | 1.18.2-r60 |
| Wolfi | logstash-9.1 | 9.1.10-r6 |
| Wolfi | logstash-9.1-bitnami-compat | 9.1.10-r6 |
| Wolfi | logstash-9.1-iamguarded-compat | 9.1.10-r6 |
| Wolfi | logstash-9.1-with-output-opensearch | 9.1.10-r6 |
| Wolfi | logstash-9.2 | 9.2.8-r2 |
| Wolfi | logstash-9.2-iamguarded-compat | 9.2.8-r2 |
| Wolfi | logstash-9.2-with-output-opensearch | 9.2.8-r2 |
| Wolfi | logstash-9.3 | 9.3.3-r2 |
| Wolfi | logstash-9.3-iamguarded-compat | 9.3.3-r2 |
| Wolfi | logstash-9.3-with-output-opensearch | 9.3.3-r2 |
| Wolfi | ruby3.2-rack-2.2 | 2.2.23-r0 |
| Wolfi | ruby3.2-rails-8.0 | 8.0.5-r0 |
| Wolfi | ruby3.3-rack-2.2 | 2.2.22-r0 |
| Wolfi | ruby3.3-rack-2.2 | 2.2.23-r0 |
| Wolfi | ruby3.4-rack-2.2 | 2.2.23-r0 |
| Wolfi | ruby3.4-rails-8.0 | 8.0.5-r2 |
| Wolfi | ruby4.0-rack-2.2 | 2.2.23-r0 |
| openSUSE Leap 16.0 | rmt-server | 3.1.0-160000.1.1 |
| openSUSE Tumbleweed | rubygem-rack-2.2 | 2.2.23-1.1 |