CVE-2019-11808

Name: CVE-2019-11808
Creator: NVD / NIST
Published: 2019-05-07T07:29:05.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.31%

Last modified Jun 17, 2026

CVE-2019-11808 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.31% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.31%

67.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-338

Affected Software

Vendor	Product	Versions
Ratpack Project	Ratpack	< 1.6.1

References

https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42dPatch, Third Party Advisory
https://github.com/ratpack/ratpack/issues/1448Patch, Third Party Advisory
https://github.com/ratpack/ratpack/releases/tag/v1.6.1Release Notes, Third Party Advisory
https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42dPatch, Third Party Advisory
https://github.com/ratpack/ratpack/issues/1448Patch, Third Party Advisory
https://github.com/ratpack/ratpack/releases/tag/v1.6.1Release Notes, Third Party Advisory

Timeline

Published: May 7, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11808?

How severe is CVE-2019-11808?

Severity scoring for CVE-2019-11808 is pending analysis. The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11808?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11808?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST