CVE-2019-17513
An issue was discovered in Ratpack before 1.7.5.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.15% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- ratpack project/ratpack
- Source
- cve@mitre.org
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.