CVE catalog
CVE-2019-16254
jruby: CVE-2019-16254
- Severity
- Medium · CVSS 6.8
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.57% · Oct 25, 2026
Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | jruby | sid | 10.1.2.0+ds-1 | fixed |
| Debian | jruby | forky | 10.1.2.0+ds-1 | fixed |
| Debian | jruby | trixie | 9.4.8.0+ds-3 | fixed |
| Debian | jruby | bookworm | 9.3.9.0+ds-8 | fixed |
| Alpine | ruby | 3.10 | 2.5.7-r0 | fixed |
| Alpine | ruby | 3.11 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.12 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.13 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.14 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.15 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.16 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.17 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.18 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.19 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.20 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.21 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.22 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.23 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.24 | 2.6.5-r0 | fixed |
| Alpine | ruby | 3.7 | 2.4.10-r0 | fixed |
| Alpine | ruby | 3.8 | 2.5.7-r0 | fixed |
| Alpine | ruby | 3.9 | 2.5.7-r0 | fixed |
| Ubuntu | jruby | pro | 1.5.6-5ubuntu1 | vulnerable |
| Ubuntu | jruby | pro | 1.5.6-6 | vulnerable |
| Ubuntu | jruby | pro | 1.5.6-7 | vulnerable |
| Ubuntu | jruby | pro | 1.5.6-9+deb8u2build0.14.04.1~esm2 | fixed |
| Ubuntu | ruby2.3 | 16.04 | 2.3.0-1 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.0-2 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.0-4ubuntu2 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.0-4ubuntu3 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.0-5ubuntu1 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.2 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.4 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.5 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.6 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.7 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.9 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.10 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.11 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~16.04.12 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~ubuntu16.04.13 | vulnerable |
| Ubuntu | ruby2.3 | 16.04 | 2.3.1-2~ubuntu16.04.14 | fixed |
| Ubuntu | ruby2.5 | 18.04 | 2.5.0~preview1-1ubuntu2 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.0-4ubuntu1 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.0-4ubuntu4 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.0-5ubuntu1 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.0-6ubuntu1 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1.1 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1.2 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1.4 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1.5 | vulnerable |
| Ubuntu | ruby2.5 | 18.04 | 2.5.1-1ubuntu1.6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | jruby | source | sid | 9.3.9.0+ds-1 | not yet assigned | Not reported | [972230] |
| Debian | jruby | source | forky | 9.3.9.0+ds-1 | not yet assigned | Not reported | [972230] |
| Debian | jruby | source | trixie | 9.3.9.0+ds-1 | not yet assigned | Not reported | [972230] |
| Debian | jruby | source | bookworm | 9.3.9.0+ds-1 | not yet assigned | Not reported | [972230] |
| Alpine | ruby | apk | 3.10 | 2.5.7-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.11 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.12 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.13 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.14 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.15 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.16 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.17 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.18 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.19 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.20 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.21 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.22 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.23 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.24 | 2.6.5-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.7 | 2.4.10-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.8 | 2.5.7-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Alpine | ruby | apk | 3.9 | 2.5.7-r0 | Not reported | ALPINE-CVE-2019-16254 | Not reported |
| Ubuntu | jruby | deb | pro | 1.5.6-9+deb8u2build0.14.04.1~esm2 | Not reported | UBUNTU-CVE-2019-16254 | Not reported |
| Ubuntu | ruby2.3 | deb | 16.04 | 2.3.1-2~ubuntu16.04.14 | Not reported | UBUNTU-CVE-2019-16254 | Not reported |
| Ubuntu | ruby2.5 | deb | 18.04 | 2.5.1-1ubuntu1.6 | Not reported | UBUNTU-CVE-2019-16254 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [jruby]Fixed
Details (2)
9.3.9.0+ds-8· all · bookwormFixed · Fixed:
9.3.9.0+ds-1dsa · jruby · debian · bookworm; dsa · jruby · debian · 12
9.3.9.0+ds-8· all · bookwormFixed · Fixed:
9.3.9.0+ds-1dsa · jruby · debian · bookworm; dsa · jruby · debian · 12
[Debian 13 (Trixie)]
- [jruby]Fixed
Details (2)
9.4.8.0+ds-3· all · trixieFixed · Fixed:
9.3.9.0+ds-1dsa · jruby · debian · 13
9.4.8.0+ds-3· all · trixieFixed · Fixed:
9.3.9.0+ds-1dsa · jruby · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_2587.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2019-16254]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2019-16254]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2019-16254]
- [https://security-tracker.debian.org/tracker/CVE-2019-16254]
- [https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-16254.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2019/wid-sec-w-2023-1110.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]