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CVE-2019-11808
Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if…
Low3.7EPSS 1.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if an attacker can determine a small window for the server start time and obtain a session ID value, they can theoretically determine the sequence of session IDs.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Low3.7 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.3% · top 29% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.ratpack:ratpack-groovyGHSA-54mg-vgrp-mwx9 (opens in a new tab)
- Mavenio.ratpack:ratpack-javaGHSA-54mg-vgrp-mwx9 (opens in a new tab)
- Mavenio.ratpack:ratpack-sessionGHSA-54mg-vgrp-mwx9 (opens in a new tab)
References (3)
- https://github.com/ratpack/ratpack/releases/tag/v1.6.1 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42d (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ratpack/ratpack/issues/1448 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-54mg-vgrp-mwx9 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-11808)Record last updated .