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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-61772

Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` can accumulate unbounded data when a multipart part’s header block never terminates with the required blank line (`CRLFCRLF`). The parser keeps appending incoming bytes to memory without a size cap, allowing a remote attacker to exhaust memory and cause a denial of service (DoS). Attackers can send incomplete multipart headers to trigger high memory use, leading to process termination (OOM) or severe slowdown. The effect scales with request size limits and concurrency. All applications handling multipart uploads may be affected. Versions 2.2.19, 3.1.17, and 3.2.2 cap per-part header size (e.g., 64 KiB). As a workaround, restrict maximum request sizes at the proxy or web server layer (e.g., Nginx `client_max_body_size`).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2025-61772
  • Rack » Rack » Version: 0.1
    cpe:2.3:a:rack:rack:0.1
  • Rack » Rack » Version: 0.2
    cpe:2.3:a:rack:rack:0.2
  • Rack » Rack » Version: 0.3
    cpe:2.3:a:rack:rack:0.3
  • Rack » Rack » Version: 0.4
    cpe:2.3:a:rack:rack:0.4
  • Rack » Rack » Version: 0.9
    cpe:2.3:a:rack:rack:0.9
  • Rack » Rack » Version: 0.9.1
    cpe:2.3:a:rack:rack:0.9.1
  • Rack » Rack » Version: 1.0
    cpe:2.3:a:rack:rack:1.0
  • Rack » Rack » Version: 1.0.1
    cpe:2.3:a:rack:rack:1.0.1
  • Rack » Rack » Version: 1.1
    cpe:2.3:a:rack:rack:1.1
  • Rack » Rack » Version: 1.1.2
    cpe:2.3:a:rack:rack:1.1.2
  • Rack » Rack » Version: 1.1.3
    cpe:2.3:a:rack:rack:1.1.3
  • Rack » Rack » Version: 1.1.4
    cpe:2.3:a:rack:rack:1.1.4
  • Rack » Rack » Version: 1.1.5
    cpe:2.3:a:rack:rack:1.1.5
  • Rack » Rack » Version: 1.1.6
    cpe:2.3:a:rack:rack:1.1.6
  • Rack » Rack » Version: 1.2
    cpe:2.3:a:rack:rack:1.2
  • Rack » Rack » Version: 1.2.1
    cpe:2.3:a:rack:rack:1.2.1
  • Rack » Rack » Version: 1.2.2
    cpe:2.3:a:rack:rack:1.2.2
  • Rack » Rack » Version: 1.2.3
    cpe:2.3:a:rack:rack:1.2.3
  • Rack » Rack » Version: 1.2.4
    cpe:2.3:a:rack:rack:1.2.4
  • Rack » Rack » Version: 1.2.5
    cpe:2.3:a:rack:rack:1.2.5
  • Rack » Rack » Version: 1.2.6
    cpe:2.3:a:rack:rack:1.2.6
  • Rack » Rack » Version: 1.2.7
    cpe:2.3:a:rack:rack:1.2.7
  • Rack » Rack » Version: 1.2.8
    cpe:2.3:a:rack:rack:1.2.8
  • Rack » Rack » Version: 1.3.0
    cpe:2.3:a:rack:rack:1.3.0
  • Rack » Rack » Version: 1.3.1
    cpe:2.3:a:rack:rack:1.3.1
  • Rack » Rack » Version: 1.3.10
    cpe:2.3:a:rack:rack:1.3.10
  • Rack » Rack » Version: 1.3.2
    cpe:2.3:a:rack:rack:1.3.2
  • Rack » Rack » Version: 1.3.3
    cpe:2.3:a:rack:rack:1.3.3
  • Rack » Rack » Version: 1.3.4
    cpe:2.3:a:rack:rack:1.3.4
  • Rack » Rack » Version: 1.3.5
    cpe:2.3:a:rack:rack:1.3.5
  • Rack » Rack » Version: 1.3.6
    cpe:2.3:a:rack:rack:1.3.6
  • Rack » Rack » Version: 1.3.7
    cpe:2.3:a:rack:rack:1.3.7
  • Rack » Rack » Version: 1.3.8
    cpe:2.3:a:rack:rack:1.3.8
  • Rack » Rack » Version: 1.3.9
    cpe:2.3:a:rack:rack:1.3.9
  • Rack » Rack » Version: 1.4.0
    cpe:2.3:a:rack:rack:1.4.0
  • Rack » Rack » Version: 1.4.1
    cpe:2.3:a:rack:rack:1.4.1
  • Rack » Rack » Version: 1.4.2
    cpe:2.3:a:rack:rack:1.4.2
  • Rack » Rack » Version: 1.4.3
    cpe:2.3:a:rack:rack:1.4.3
  • Rack » Rack » Version: 1.4.4
    cpe:2.3:a:rack:rack:1.4.4
  • Rack » Rack » Version: 1.4.5
    cpe:2.3:a:rack:rack:1.4.5
  • Rack » Rack » Version: 1.4.6
    cpe:2.3:a:rack:rack:1.4.6
  • Rack » Rack » Version: 1.4.7
    cpe:2.3:a:rack:rack:1.4.7
  • Rack » Rack » Version: 1.5.0
    cpe:2.3:a:rack:rack:1.5.0
  • Rack » Rack » Version: 1.5.1
    cpe:2.3:a:rack:rack:1.5.1
  • Rack » Rack » Version: 1.5.2
    cpe:2.3:a:rack:rack:1.5.2
  • Rack » Rack » Version: 1.5.3
    cpe:2.3:a:rack:rack:1.5.3
  • Rack » Rack » Version: 1.5.4
    cpe:2.3:a:rack:rack:1.5.4
  • Rack » Rack » Version: 1.5.5
    cpe:2.3:a:rack:rack:1.5.5
  • Rack » Rack » Version: 1.6.0
    cpe:2.3:a:rack:rack:1.6.0
  • Rack » Rack » Version: 1.6.1
    cpe:2.3:a:rack:rack:1.6.1
  • Rack » Rack » Version: 1.6.10
    cpe:2.3:a:rack:rack:1.6.10
  • Rack » Rack » Version: 1.6.11
    cpe:2.3:a:rack:rack:1.6.11
  • Rack » Rack » Version: 1.6.12
    cpe:2.3:a:rack:rack:1.6.12
  • Rack » Rack » Version: 1.6.13
    cpe:2.3:a:rack:rack:1.6.13
  • Rack » Rack » Version: 1.6.2
    cpe:2.3:a:rack:rack:1.6.2
  • Rack » Rack » Version: 1.6.3
    cpe:2.3:a:rack:rack:1.6.3
  • Rack » Rack » Version: 1.6.4
    cpe:2.3:a:rack:rack:1.6.4
  • Rack » Rack » Version: 1.6.5
    cpe:2.3:a:rack:rack:1.6.5
  • Rack » Rack » Version: 1.6.6
    cpe:2.3:a:rack:rack:1.6.6
  • Rack » Rack » Version: 1.6.7
    cpe:2.3:a:rack:rack:1.6.7
  • Rack » Rack » Version: 1.6.8
    cpe:2.3:a:rack:rack:1.6.8
  • Rack » Rack » Version: 1.6.9
    cpe:2.3:a:rack:rack:1.6.9
  • Rack » Rack » Version: 2.0.0
    cpe:2.3:a:rack:rack:2.0.0
  • Rack » Rack » Version: 2.0.1
    cpe:2.3:a:rack:rack:2.0.1
  • Rack » Rack » Version: 2.0.2
    cpe:2.3:a:rack:rack:2.0.2
  • Rack » Rack » Version: 2.0.3
    cpe:2.3:a:rack:rack:2.0.3
  • Rack » Rack » Version: 2.0.4
    cpe:2.3:a:rack:rack:2.0.4
  • Rack » Rack » Version: 2.0.5
    cpe:2.3:a:rack:rack:2.0.5
  • Rack » Rack » Version: 2.0.6
    cpe:2.3:a:rack:rack:2.0.6
  • Rack » Rack » Version: 2.0.7
    cpe:2.3:a:rack:rack:2.0.7
  • Rack » Rack » Version: 2.0.8
    cpe:2.3:a:rack:rack:2.0.8
  • Rack » Rack » Version: 2.0.9
    cpe:2.3:a:rack:rack:2.0.9
  • Rack » Rack » Version: 2.0.9.2
    cpe:2.3:a:rack:rack:2.0.9.2
  • Rack » Rack » Version: 2.0.9.3
    cpe:2.3:a:rack:rack:2.0.9.3
  • Rack » Rack » Version: 2.1.0
    cpe:2.3:a:rack:rack:2.1.0
  • Rack » Rack » Version: 2.1.1
    cpe:2.3:a:rack:rack:2.1.1
  • Rack » Rack » Version: 2.1.2
    cpe:2.3:a:rack:rack:2.1.2
  • Rack » Rack » Version: 2.1.3
    cpe:2.3:a:rack:rack:2.1.3
  • Rack » Rack » Version: 2.1.4
    cpe:2.3:a:rack:rack:2.1.4
  • Rack » Rack » Version: 2.1.4.2
    cpe:2.3:a:rack:rack:2.1.4.2
  • Rack » Rack » Version: 2.1.4.3
    cpe:2.3:a:rack:rack:2.1.4.3
  • Rack » Rack » Version: 2.2.0
    cpe:2.3:a:rack:rack:2.2.0
  • Rack » Rack » Version: 2.2.1
    cpe:2.3:a:rack:rack:2.2.1
  • Rack » Rack » Version: 2.2.10
    cpe:2.3:a:rack:rack:2.2.10
  • Rack » Rack » Version: 2.2.11
    cpe:2.3:a:rack:rack:2.2.11
  • Rack » Rack » Version: 2.2.12
    cpe:2.3:a:rack:rack:2.2.12
  • Rack » Rack » Version: 2.2.13
    cpe:2.3:a:rack:rack:2.2.13
  • Rack » Rack » Version: 2.2.14
    cpe:2.3:a:rack:rack:2.2.14
  • Rack » Rack » Version: 2.2.15
    cpe:2.3:a:rack:rack:2.2.15
  • Rack » Rack » Version: 2.2.16
    cpe:2.3:a:rack:rack:2.2.16
  • Rack » Rack » Version: 2.2.17
    cpe:2.3:a:rack:rack:2.2.17
  • Rack » Rack » Version: 2.2.18
    cpe:2.3:a:rack:rack:2.2.18
  • Rack » Rack » Version: 2.2.2
    cpe:2.3:a:rack:rack:2.2.2
  • Rack » Rack » Version: 2.2.3
    cpe:2.3:a:rack:rack:2.2.3
  • Rack » Rack » Version: 2.2.4
    cpe:2.3:a:rack:rack:2.2.4
  • Rack » Rack » Version: 2.2.4.1
    cpe:2.3:a:rack:rack:2.2.4.1
  • Rack » Rack » Version: 2.2.5
    cpe:2.3:a:rack:rack:2.2.5
  • Rack » Rack » Version: 2.2.6
    cpe:2.3:a:rack:rack:2.2.6
  • Rack » Rack » Version: 2.2.6.1
    cpe:2.3:a:rack:rack:2.2.6.1
  • Rack » Rack » Version: 2.2.6.2
    cpe:2.3:a:rack:rack:2.2.6.2
  • Rack » Rack » Version: 2.2.6.3
    cpe:2.3:a:rack:rack:2.2.6.3
  • Rack » Rack » Version: 2.2.6.4
    cpe:2.3:a:rack:rack:2.2.6.4
  • Rack » Rack » Version: 2.2.7
    cpe:2.3:a:rack:rack:2.2.7
  • Rack » Rack » Version: 2.2.8
    cpe:2.3:a:rack:rack:2.2.8
  • Rack » Rack » Version: 2.2.8.1
    cpe:2.3:a:rack:rack:2.2.8.1
  • Rack » Rack » Version: 2.2.9
    cpe:2.3:a:rack:rack:2.2.9
  • Rack » Rack » Version: 3.1.0
    cpe:2.3:a:rack:rack:3.1.0
  • Rack » Rack » Version: 3.1.1
    cpe:2.3:a:rack:rack:3.1.1
  • Rack » Rack » Version: 3.1.10
    cpe:2.3:a:rack:rack:3.1.10
  • Rack » Rack » Version: 3.1.11
    cpe:2.3:a:rack:rack:3.1.11
  • Rack » Rack » Version: 3.1.12
    cpe:2.3:a:rack:rack:3.1.12
  • Rack » Rack » Version: 3.1.13
    cpe:2.3:a:rack:rack:3.1.13
  • Rack » Rack » Version: 3.1.14
    cpe:2.3:a:rack:rack:3.1.14
  • Rack » Rack » Version: 3.1.15
    cpe:2.3:a:rack:rack:3.1.15
  • Rack » Rack » Version: 3.1.16
    cpe:2.3:a:rack:rack:3.1.16
  • Rack » Rack » Version: 3.1.2
    cpe:2.3:a:rack:rack:3.1.2
  • Rack » Rack » Version: 3.1.3
    cpe:2.3:a:rack:rack:3.1.3
  • Rack » Rack » Version: 3.1.4
    cpe:2.3:a:rack:rack:3.1.4
  • Rack » Rack » Version: 3.1.5
    cpe:2.3:a:rack:rack:3.1.5
  • Rack » Rack » Version: 3.1.6
    cpe:2.3:a:rack:rack:3.1.6
  • Rack » Rack » Version: 3.1.7
    cpe:2.3:a:rack:rack:3.1.7
  • Rack » Rack » Version: 3.1.8
    cpe:2.3:a:rack:rack:3.1.8
  • Rack » Rack » Version: 3.1.9
    cpe:2.3:a:rack:rack:3.1.9
  • Rack » Rack » Version: 3.2.0
    cpe:2.3:a:rack:rack:3.2.0
  • Rack » Rack » Version: 3.2.1
    cpe:2.3:a:rack:rack:3.2.1


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