CVE-2019-17513

Name: CVE-2019-17513
Creator: NVD / NIST
Published: 2019-10-18T03:15:09.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.15%

Last modified Jun 17, 2026

CVE-2019-17513 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Ratpack before 1.7.5. Due to a misuse of the Netty library class DefaultHttpHeaders, there is no validation that headers lack HTTP control characters. EPSS estimates a 2.15% chance of exploitation in the next 30 days.

Description

An issue was discovered in Ratpack before 1.7.5. Due to a misuse of the Netty library class DefaultHttpHeaders, there is no validation that headers lack HTTP control characters. Thus, if untrusted data is used to construct HTTP headers with Ratpack, HTTP Response Splitting can occur.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

2.15%

79.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Ratpack Project	Ratpack	< 1.7.5

References

https://github.com/ratpack/ratpack/commit/c560a8d10cb8bdd7a526c1ca2e67c8f224ca23aePatch
https://github.com/ratpack/ratpack/commit/efb910d38a96494256f36675ef0e5061097dd77dPatch
https://github.com/ratpack/ratpack/releases/tag/v1.7.5Release Notes, Third Party Advisory
https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9jThird Party Advisory
https://ratpack.io/versions/1.7.5Vendor Advisory
https://github.com/ratpack/ratpack/commit/c560a8d10cb8bdd7a526c1ca2e67c8f224ca23aePatch
https://github.com/ratpack/ratpack/commit/efb910d38a96494256f36675ef0e5061097dd77dPatch
https://github.com/ratpack/ratpack/releases/tag/v1.7.5Release Notes, Third Party Advisory
https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9jThird Party Advisory
https://ratpack.io/versions/1.7.5Vendor Advisory

Timeline

Published: Oct 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17513?

How severe is CVE-2019-17513?

CVE-2019-17513 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.15% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17513?

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-2019-17513?

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

Scan your code now

Source: NVD / NIST