critical
CVE-2019-19330
haproxy: HTTP/2 implementation vulnerable to intermediary encapsulation attacks
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by Red Hat (medium), Oracle (medium), Ubuntu (medium).
Description
The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0), aka Intermediary Encapsulation Attacks.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 1.0 | haproxy | 2.0.10-1.ph1 |
| Photon OS 2.0 | haproxy | 2.0.10-1.ph2 |
| Photon OS 3.0 | haproxy | 2.0.10-1.ph3 |
| alpine 3.8 | haproxy | 1.8.23 |
| alpine 3.9 | haproxy | 1.8.23-r0 |
| debian 10 | haproxy | 1.8.19-1+deb10u1 |
| debian 11 | haproxy | 2.0.10-1 |
| debian 12 | haproxy | 2.0.10-1 |
| debian 13 | haproxy | 2.0.10-1 |
| debian 14 | haproxy | 2.0.10-1 |
| echo | haproxy | 2.0.10-1 |
| Oracle Linux 8 | haproxy | 1.8.23-3.el8 |
Show all 16 entries from 16 sources
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 1.0 | haproxy | 2.0.10-1.ph1 |
| Photon OS 2.0 | haproxy | 2.0.10-1.ph2 |
| Photon OS 3.0 | haproxy | 2.0.10-1.ph3 |
| alpine 3.8 | haproxy | 1.8.23 |
| alpine 3.9 | haproxy | 1.8.23-r0 |
| debian 10 | haproxy | 1.8.19-1+deb10u1 |
| debian 11 | haproxy | 2.0.10-1 |
| debian 12 | haproxy | 2.0.10-1 |
| debian 13 | haproxy | 2.0.10-1 |
| debian 14 | haproxy | 2.0.10-1 |
| echo | haproxy | 2.0.10-1 |
| Oracle Linux 8 | haproxy | 1.8.23-3.el8 |
| ubuntu 18.04 | haproxy | 1.8.8-1ubuntu0.9 |
| ubuntu 18.04-ESM | haproxy | 1.8.8-1ubuntu0.9 |
| ubuntu 19.04 | haproxy | 1.8.19-1ubuntu1.3 |
| ubuntu 19.10 | haproxy | 2.0.5-1ubuntu0.3 |
References
- https://access.redhat.com/security/cve/CVE-2019-19330
- https://git.haproxy.org/?p=haproxy-2.0.git%3Ba=commit%3Bh=ac198b92d461515551b95daae20954b3053ce87e
- https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=ac198b92d461515551b95daae20954b3053ce87e
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=146f53ae7e97dbfe496d0445c2802dd0a30b0878
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=54f53ef7ce4102be596130b44c768d1818570344
- https://git.haproxy.org/?p=haproxy.git;a=commit;h=146f53ae7e97dbfe496d0445c2802dd0a30b0878
- https://git.haproxy.org/?p=haproxy.git;a=commit;h=54f53ef7ce4102be596130b44c768d1818570344
- https://linux.oracle.com/cve/CVE-2019-19330.html
All 17 references
- https://linux.oracle.com/errata/ELSA-2020-1725.html
- https://nvd.nist.gov/vuln/detail/CVE-2019-19330
- https://seclists.org/bugtraq/2019/Nov/45
- https://security.gentoo.org/glsa/202004-01
- https://tools.ietf.org/html/rfc7540#section-10.3
- https://ubuntu.com/security/notices/USN-4212-1
- https://usn.ubuntu.com/4212-1/
- https://www.cve.org/CVERecord?id=CVE-2019-19330
- https://www.debian.org/security/2019/dsa-4577