Improper Authentication Affecting logstash-9.1-with-output-opensearch package, versions *


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.06% (19th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LOGSTASH91WITHOUTPUTOPENSEARCH-16340420
  • published2 May 2026
  • disclosed7 Apr 2026

Introduced: 7 Apr 2026

NewCVE-2026-39324  (opens in a new tab)
CWE-287  (opens in a new tab)
CWE-345  (opens in a new tab)
CWE-502  (opens in a new tab)
CWE-565  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest logstash-9.1-with-output-opensearch.

NVD Description

Note: Versions mentioned in the description apply only to the upstream logstash-9.1-with-output-opensearch package and not the logstash-9.1-with-output-opensearch package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1