CVE-2025-59830
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-59830
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-59830.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-59830
- Aliases
- Downstream
- Related
- Published
- 2025-09-25T14:37:06.967Z
- Modified
- 2025-12-02T20:15:50.606753Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters
- Details
-
Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59830.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-400", "CWE-770" ] }- References
Affected packages
Git / github.com/rack/rack
Affected ranges
- Type
- GIT
- Repo
- https://github.com/rack/rack
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
0.*
0.1
0.2
0.3
1.*
1.0
1.1
1.2
1.2.1
1.3.0
1.3.0.beta
1.3.0.beta2
1.4.0
1.4.1
1.5.0
1.5.1
1.5.2
1.6.0
1.6.0.beta
1.6.0.beta2
2.*
2.0.0
2.0.0.alpha
2.0.0.rc1
2.0.1
2.1.0
2.2.0
2.2.3
2.2.3.1
2.2.4
v2.*
v2.2.1
v2.2.10
v2.2.11
v2.2.12
v2.2.13
v2.2.14
v2.2.15
v2.2.16
v2.2.17
v2.2.2
v2.2.5
v2.2.6
v2.2.6.1
v2.2.6.2
v2.2.6.3
v2.2.6.4
v2.2.7
v2.2.8
v2.2.8.1
v2.2.9