critique
CVE-2026-55203
haproxy: HAProxy: Response smuggling due to integer overflow in FastCGI record length handling
Dans la Trivy database depuis au moins le 24 oct. 2026, 07:11 UTCLa date d'entrée avant ce build n'est pas enregistrée.
Sévérité par source
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Red Hat7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
Bitnami9.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N
Le label propre à Trivy est CRITICAL. Critique selon NVD, Bitnami. Plus basse selon Red Hat (élevée), AlmaLinux (élevée), Azure Linux (élevée), Oracle (élevée), Rocky Linux (élevée), Ubuntu (moyenne).
Description
HAProxy through 3.4.0, fixed in commit 5985276, contains an integer overflow vulnerability in the fcgi_conn structure's drl field that allows buffer misparse as new FCGI record headers. When contentLength is 65535 and paddingLength is 1 or more, the drl field wraps to 0, causing incorrect record consumption and allowing malicious FastCGI backends to desynchronize the FCGI framing parser, potentially causing request routing errors, response smuggling, or memory safety issues.
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | haproxy | 2.4.36, 2.6.30, 2.8.25, 3.0.24, 3.2.20, 3.4.1 |
| alma 10 | haproxy | 3.0.5-6.el10_2.2 |
| alma 9 | haproxy | 2.8.14-3.el9_8.2 |
| Azure Linux 3.0 | haproxy | 0:2.9.11-7.azl3 |
| chainguard | haproxy-2.4, haproxy-2.6, haproxy-2.8 et 3 autres | 2.4.36-r0 et 5 autres |
| debian 11 | haproxy | pas de correctif indiqué |
| debian 12 | haproxy | pas de correctif indiqué |
| debian 13 | haproxy | pas de correctif indiqué |
| debian 14 | haproxy | 3.2.20-1 |
| echo | haproxy | pas de correctif indiqué |
| minimos | haproxy-2.6, haproxy-2.8, haproxy-3.0 et 2 autres | 2.6.30-r0 et 4 autres |
| Oracle Linux 9 | haproxy | 2.8.14-3.el9_8.2 |
Afficher les 49 entrées de 34 sources
| Source | Paquet | Corrigé en |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | haproxy | 2.4.36, 2.6.30, 2.8.25, 3.0.24, 3.2.20, 3.4.1 |
| alma 10 | haproxy | 3.0.5-6.el10_2.2 |
| alma 9 | haproxy | 2.8.14-3.el9_8.2 |
| Azure Linux 3.0 | haproxy | 0:2.9.11-7.azl3 |
| chainguard | haproxy-2.4 | 2.4.36-r0 |
| chainguard | haproxy-2.6 | 2.6.31-r0 |
| chainguard | haproxy-2.8 | 2.8.26-r0 |
| chainguard | haproxy-3.0 | 3.0.24-r0 |
| chainguard | haproxy-3.2 | 3.2.20-r0 |
| chainguard | haproxy-3.3 | 3.3.11-r0 |
| debian 11 | haproxy | pas de correctif indiqué |
| debian 12 | haproxy | pas de correctif indiqué |
| debian 13 | haproxy | pas de correctif indiqué |
| debian 14 | haproxy | 3.2.20-1 |
| echo | haproxy | pas de correctif indiqué |
| minimos | haproxy-2.6 | 2.6.30-r0 |
| minimos | haproxy-2.8 | 2.8.25-r0 |
| minimos | haproxy-3.0 | 3.0.24-r0 |
| minimos | haproxy-3.2 | 3.2.20-r0 |
| minimos | haproxy-3.4 | 3.4.1-r0 |
| Oracle Linux 9 | haproxy | 2.8.14-3.el9_8.2 |
| rapidfort alma 10 | haproxy | 3.0.5-6.el10_2.2 |
| rapidfort alma 9 | haproxy | 2.8.14-3.el9_8.2 |
| rapidfort alpine 3.20 | haproxy | 3.0.24-r0 |
| rapidfort alpine 3.21 | haproxy | 3.0.24-r0 |
| rapidfort amazon linux 2023 | haproxy | 3.0.23-2.amzn2023.0.1 |
| rapidfort debian 12 | haproxy | 0:3.2.20-1 |
| rapidfort debian 13 | haproxy | 0:3.2.20-1 |
| rapidfort fedora 43 | haproxy | 3.0.24-1.fc43 |
| rapidfort Oracle Linux 10 | haproxy | 0:3.0.5-6.el10_2.2 |
| rapidfort Oracle Linux 9 | haproxy | 0:2.8.14-3.el9_8.2 |
| rapidfort rocky 9 | haproxy | 0:2.8.14-3.el9_8.2 |
| rapidfort ubuntu 20.04 | haproxy | 0:2.4.30-0ubuntu0.22.04.2, 0:2.8.16-0ubuntu0.24.04.3, 0:3.2.9-1ubuntu2.2 |
| rapidfort ubuntu 22.04 | haproxy | 0:2.4.30-0ubuntu0.22.04.2, 0:2.8.16-0ubuntu0.24.04.3, 0:3.2.9-1ubuntu2.2 |
| rapidfort ubuntu 24.04 | haproxy | 0:2.4.30-0ubuntu0.22.04.2, 0:2.8.16-0ubuntu0.24.04.3, 0:3.2.9-1ubuntu2.2 |
| Red Hat | haproxy | pas de correctif indiqué |
| Red Hat | haproxy28 | pas de correctif indiqué |
| Red Hat | rhceph-ci/haproxy | pas de correctif indiqué |
| Red Hat | rhceph/rhceph-haproxy-rhel10 | pas de correctif indiqué |
| Red Hat | rhceph/rhceph-haproxy-rhel8 | pas de correctif indiqué |
| Red Hat | rhceph/rhceph-haproxy-rhel9 | pas de correctif indiqué |
| rocky 10 | haproxy | 0.0.0 |
| rocky 9 | haproxy | 2.8.14-3.el9_8.2 |
| ubuntu 22.04 | haproxy | 2.4.30-0ubuntu0.22.04.2 |
| ubuntu 24.04 | haproxy | 2.8.16-0ubuntu0.24.04.3 |
| ubuntu 25.10 | haproxy | 3.0.12-0ubuntu0.25.10.5 |
| ubuntu 26.04 | haproxy | 3.2.9-1ubuntu2.2 |
| wolfi | haproxy-3.2 | 3.2.20-r0 |
| wolfi | haproxy-3.3 | 3.3.11-r0 |
Références
- https://access.redhat.com/errata/RHSA-2026:55772
- https://access.redhat.com/security/cve/CVE-2026-55203
- https://bugzilla.redhat.com/2490518
- https://bugzilla.redhat.com/2490522
- https://bugzilla.redhat.com/show_bug.cgi?id=2490518
- https://bugzilla.redhat.com/show_bug.cgi?id=2490522
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55203
Les 18 références
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55204
- https://errata.almalinux.org/9/ALSA-2026-55772.html
- https://errata.rockylinux.org/RLSA-2026:55772
- https://github.com/haproxy/haproxy/commit/5985276735777634d8c85f1d73bb7764aab0d6dd
- https://linux.oracle.com/cve/CVE-2026-55203.html
- https://linux.oracle.com/errata/ELSA-2026-55772.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-55203
- https://ubuntu.com/security/notices/USN-8459-1
- https://www.cve.org/CVERecord?id=CVE-2026-55203
- https://www.vulncheck.com/advisories/haproxy-integer-overflow-in-fcgi-demux-record-length-field