CVE catalog
CVE-2023-46136
python-werkzeug: CVE-2023-46136
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.07% · Oct 25, 2026
Werkzeug is a comprehensive WSGI web application library. In versions on the 3.x branch prior to 3.0.1 and on the 2.x branch prior to 2.3.8, if an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1 and 2.3.8.
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 | python-werkzeug | sid | 3.1.9-1 | fixed |
| Debian | python-werkzeug | forky | 3.1.9-1 | fixed |
| Debian | python-werkzeug | trixie | 3.1.3-2 | fixed |
| Debian | python-werkzeug | bookworm | 2.2.2-3+deb12u1 | fixed |
| Alpine | py3-werkzeug | 3.23 | 2.3.7-r0 | fixed |
| Alpine | py3-werkzeug | 3.24 | 2.3.7-r0 | fixed |
| Opensuse | python-Werkzeug | tumbleweed | 3.0.1-1.1 | fixed |
| Suse | python-Werkzeug | linux enterprise module for python 3 15 sp4 | 2.3.6-150400.6.6.1 | fixed |
| Suse | python-Werkzeug | linux enterprise module for python 3 15 sp5 | 2.3.6-150400.6.6.1 | fixed |
| Opensuse | python-Werkzeug | leap 15.4 | 2.3.6-150400.6.6.1 | fixed |
| Opensuse | python-Werkzeug | leap 15.5 | 2.3.6-150400.6.6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-werkzeug | source | sid | 3.0.1-2 | not yet assigned | Not reported | [1054553] |
| Debian | python-werkzeug | source | forky | 3.0.1-2 | not yet assigned | Not reported | [1054553] |
| Debian | python-werkzeug | source | trixie | 3.0.1-2 | not yet assigned | Not reported | [1054553] |
| Debian | python-werkzeug | source | bookworm | 2.2.2-3+deb12u1 | not yet assigned | Not reported | [1054553] |
| Alpine | py3-werkzeug | apk | 3.23 | 2.3.7-r0 | Not reported | ALPINE-CVE-2023-46136 | Not reported |
| Alpine | py3-werkzeug | apk | 3.24 | 2.3.7-r0 | Not reported | ALPINE-CVE-2023-46136 | Not reported |
| Opensuse | python-Werkzeug | rpm | tumbleweed | 3.0.1-1.1 | Not reported | OPENSUSE-SU-2024:13375-1 | Not reported |
| Suse | python-Werkzeug | rpm | linux enterprise module for python 3 15 sp4 | 2.3.6-150400.6.6.1 | Not reported | SUSE-SU-2023:4288-1 | Not reported |
| Suse | python-Werkzeug | rpm | linux enterprise module for python 3 15 sp5 | 2.3.6-150400.6.6.1 | Not reported | SUSE-SU-2023:4288-1 | Not reported |
| Opensuse | python-Werkzeug | rpm | leap 15.4 | 2.3.6-150400.6.6.1 | Not reported | SUSE-SU-2023:4288-1 | Not reported |
| Opensuse | python-Werkzeug | rpm | leap 15.5 | 2.3.6-150400.6.6.1 | Not reported | SUSE-SU-2023:4288-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_4288-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2023-46136]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-46136]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4288-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13375-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-46136]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-46136.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-3195.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]