CVE catalog
CVE-2023-25725
haproxy: CVE-2023-25725
- Severity
- Critical · CVSS 9.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 5.45% · Oct 25, 2026
HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
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 | haproxy | sid | 3.2.26-1 | fixed |
| Debian | haproxy | forky | 3.2.26-1 | fixed |
| Debian | haproxy | trixie | 3.0.11-1+deb13u3 | fixed |
| Debian | haproxy | trixie-security | 3.0.11-1+deb13u4 | fixed |
| Debian | haproxy | bookworm | 2.6.12-1+deb12u3 | fixed |
| Debian | haproxy | bookworm-security | 2.6.12-1+deb12u4 | fixed |
| Ubuntu | haproxy | pro | 1.5.14-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.5.15-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2ubuntu1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2ubuntu3 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3+esm1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3+esm2 | fixed |
| Ubuntu | haproxy | 18.04 | 1.7.9-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.7.9-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.4-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.7-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.4 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.6 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.7 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.8 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.9 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.10 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.11 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.13 | fixed |
| Ubuntu | haproxy | 20.04 | 2.0.5-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.8-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.9-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.10-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.10-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.11-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.12-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.5 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1.1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1.3 | fixed |
| Ubuntu | haproxy | 22.04 | 2.2.9-2ubuntu2 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.8-1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.8-2ubuntu3 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.11-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.12-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.12-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.13-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.14-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1.1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1.2 | fixed |
| Ubuntu | haproxy | pro | 1.5.14-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.5.15-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2ubuntu1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.2-2ubuntu3 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3+esm1 | vulnerable |
| Ubuntu | haproxy | pro | 1.6.3-1ubuntu0.3+esm2 | fixed |
| Ubuntu | haproxy | 18.04 | 1.7.9-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.7.9-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.4-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.7-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.4 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.6 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.7 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.8 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.9 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.10 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.11 | vulnerable |
| Ubuntu | haproxy | 18.04 | 1.8.8-1ubuntu0.13 | fixed |
| Ubuntu | haproxy | 20.04 | 2.0.5-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.8-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.9-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.10-1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.10-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.11-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.12-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.2 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.3 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.13-2ubuntu0.5 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1.1 | vulnerable |
| Ubuntu | haproxy | 20.04 | 2.0.29-0ubuntu1.3 | fixed |
| Ubuntu | haproxy | 22.04 | 2.2.9-2ubuntu2 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.8-1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.8-2ubuntu3 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.11-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.12-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.12-1ubuntu2 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.13-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.14-1ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1.1 | vulnerable |
| Ubuntu | haproxy | 22.04 | 2.4.18-0ubuntu1.2 | fixed |
| Suse | haproxy | linux enterprise micro 5.3 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | fixed |
| Suse | haproxy | linux enterprise high availability extension 15 sp4 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | fixed |
| Opensuse | haproxy | leap micro 5.3 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | fixed |
| Opensuse | haproxy | leap 15.4 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | fixed |
| Opensuse | haproxy | tumbleweed | 2.7.3+git0.1065b1000-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | haproxy | source | sid | 2.6.8-2 | not yet assigned | Not reported | Not reported |
| Debian | haproxy | source | forky | 2.6.8-2 | not yet assigned | Not reported | Not reported |
| Debian | haproxy | source | trixie | 2.6.8-2 | not yet assigned | Not reported | Not reported |
| Debian | haproxy | source | bookworm | 2.6.8-2 | not yet assigned | Not reported | Not reported |
| Ubuntu | haproxy | deb | pro | 1.6.3-1ubuntu0.3+esm2 | Not reported | USN-7135-1 | Not reported |
| Ubuntu | haproxy | deb | 18.04 | 1.8.8-1ubuntu0.13 | Not reported | USN-5869-1 | Not reported |
| Ubuntu | haproxy | deb | 20.04 | 2.0.29-0ubuntu1.3 | Not reported | USN-5869-1 | Not reported |
| Ubuntu | haproxy | deb | 22.04 | 2.4.18-0ubuntu1.2 | Not reported | USN-5869-1 | Not reported |
| Ubuntu | haproxy | deb | pro | 1.6.3-1ubuntu0.3+esm2 | Not reported | UBUNTU-CVE-2023-25725 | Not reported |
| Ubuntu | haproxy | deb | 18.04 | 1.8.8-1ubuntu0.13 | Not reported | UBUNTU-CVE-2023-25725 | Not reported |
| Ubuntu | haproxy | deb | 20.04 | 2.0.29-0ubuntu1.3 | Not reported | UBUNTU-CVE-2023-25725 | Not reported |
| Ubuntu | haproxy | deb | 22.04 | 2.4.18-0ubuntu1.2 | Not reported | UBUNTU-CVE-2023-25725 | Not reported |
| Suse | haproxy | rpm | linux enterprise micro 5.3 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | Not reported | SUSE-SU-2023:0411-1 | Not reported |
| Suse | haproxy | rpm | linux enterprise high availability extension 15 sp4 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | Not reported | SUSE-SU-2023:0411-1 | Not reported |
| Opensuse | haproxy | rpm | leap micro 5.3 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | Not reported | SUSE-SU-2023:0411-1 | Not reported |
| Opensuse | haproxy | rpm | leap 15.4 | 2.4.8+git0.d1f8d41e0-150400.3.10.1 | Not reported | SUSE-SU-2023:0411-1 | Not reported |
| Opensuse | haproxy | rpm | tumbleweed | 2.7.3+git0.1065b1000-1.1 | Not reported | OPENSUSE-SU-2024:12686-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://access.redhat.com/errata/RHSA-2023:1696]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-fu-2023_2117-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-25725]
- [https://osv.dev/vulnerability/DLA-3318-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:0411-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-25725]
- [https://osv.dev/vulnerability/USN-5869-1]
- [https://osv.dev/vulnerability/USN-7135-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:12686-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-25725]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0054.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]