CVE-2026-39324
github.com/rack/rack-session: Rack::Session: Unauthorized access via crafted session cookies
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD, GHSA, Red Hat. Niedriger laut Ubuntu (mittel).
Beschreibung
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted as valid session data without knowledge of any configured secret. Because this mechanism is used to load session state, an attacker can manipulate session contents and potentially gain unauthorized access. This vulnerability is fixed in 2.1.2.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| rubygems::GitHub Security Advisory RubyGems | rack-session | 2.1.2 |
| chainguard | logstash-8.19, logstash-9.0, logstash-9.1 und 16 weitere | 8.19.14-r3 und 15 weitere |
| debian 13 | ruby-rack-session | 2.1.1-0.1+deb13u1 |
| debian 14 | ruby-rack-session | 2.1.1-0.2 |
| echo | ruby-rack-session | 2.1.1-0.1+deb13u1 |
| minimos | logstash-9.3, ruby3.4-rack-session, ruby4.0-rack-session | 9.3.4-r0 und 1 weitere |
| rapidfort debian 12 | ruby-rack-session | 0:2.1.1-0.1+deb13u1, 0:2.1.1-0.2 |
| rapidfort debian 13 | ruby-rack-session | 0:2.1.1-0.1+deb13u1, 0:2.1.1-0.2 |
| rapidfort ubuntu 20.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rapidfort ubuntu 22.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rapidfort ubuntu 24.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rubygems::Ruby Advisory Database | rack-session | >= 2.1.2 |
Alle 39 Einträge aus 15 Quellen zeigen
| Quelle | Paket | Behoben in |
|---|---|---|
| rubygems::GitHub Security Advisory RubyGems | rack-session | 2.1.2 |
| chainguard | logstash-8.19 | 8.19.14-r3 |
| chainguard | logstash-9.0 | 9.0.8-r20 |
| chainguard | logstash-9.1 | 9.1.10-r6 |
| chainguard | logstash-9.2 | 9.2.8-r2 |
| chainguard | logstash-9.3 | 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-rails-7.2 | 7.2.3.1-r2 |
| chainguard | ruby3.2-rails-8.0 | 8.0.5-r0 |
| chainguard | ruby3.2-rails-8.1 | 8.1.3-r3 |
| chainguard | ruby3.3-rails-7.2 | 7.2.3.1-r4 |
| chainguard | ruby3.3-rails-8.0 | 8.0.5-r3 |
| chainguard | ruby3.3-rails-8.1 | 8.1.3-r4 |
| chainguard | ruby3.4-rails-7.2 | 7.2.3.1-r2 |
| chainguard | ruby3.4-rails-8.0 | 8.0.5-r2 |
| chainguard | ruby3.4-rails-8.1 | 8.1.3-r4 |
| chainguard | ruby4.0-rails-7.2 | 7.2.3.1-r3 |
| chainguard | ruby4.0-rails-8.0 | 8.0.5-r1 |
| chainguard | ruby4.0-rails-8.1 | 8.1.3-r3 |
| debian 13 | ruby-rack-session | 2.1.1-0.1+deb13u1 |
| debian 14 | ruby-rack-session | 2.1.1-0.2 |
| echo | ruby-rack-session | 2.1.1-0.1+deb13u1 |
| minimos | logstash-9.3 | 9.3.4-r0 |
| minimos | ruby3.4-rack-session | 2.1.2-r0 |
| minimos | ruby4.0-rack-session | 2.1.2-r0 |
| rapidfort debian 12 | ruby-rack-session | 0:2.1.1-0.1+deb13u1, 0:2.1.1-0.2 |
| rapidfort debian 13 | ruby-rack-session | 0:2.1.1-0.1+deb13u1, 0:2.1.1-0.2 |
| rapidfort ubuntu 20.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rapidfort ubuntu 22.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rapidfort ubuntu 24.04 | ruby-rack-session | 0:2.1.1-0.1ubuntu0.1 |
| rubygems::Ruby Advisory Database | rack-session | >= 2.1.2 |
| ubuntu 25.10 | ruby-rack-session | 2.1.1-0.1ubuntu0.1 |
| ubuntu 26.04 | ruby-rack-session | 2.1.1-0.1ubuntu0.26.04.1 |
| wolfi | logstash-9.3 | 9.3.3-r2 |
| wolfi | ruby3.2-rails-8.1 | 8.1.3-r3 |
| wolfi | ruby3.3-rails-8.1 | 8.1.3-r4 |
| wolfi | ruby3.4-rails-8.1 | 8.1.3-r4 |
| wolfi | ruby4.0-rails-8.1 | 8.1.3-r3 |
Referenzen
- https://access.redhat.com/security/cve/CVE-2026-39324
- https://github.com/advisories/GHSA-33qg-7wpp-89cq
- https://github.com/rack/rack-session
- https://github.com/rack/rack-session/security/advisories/GHSA-33qg-7wpp-89cq
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack-session/CVE-2026-39324.yml
- https://nvd.nist.gov/vuln/detail/CVE-2026-39324
- https://ubuntu.com/security/notices/USN-8190-1
- https://ubuntu.com/security/notices/USN-8190-2