CVE catalog
CVE-2024-6827
gunicorn: CVE-2024-6827
- Severity
- High · CVSS 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.81% · Oct 25, 2026
Gunicorn version 21.2.0 does not properly validate the value of the 'Transfer-Encoding' header as specified in the RFC standards, which leads to the default fallback method of 'Content-Length,' making it vulnerable to TE.CL request smuggling. This vulnerability can lead to cache poisoning, data exposure, session manipulation, SSRF, XSS, DoS, data integrity compromise, security bypass, information leakage, and business logic abuse.
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 | gunicorn | sid | 26.2.2-2 | fixed |
| Debian | gunicorn | forky | 26.2.2-2 | fixed |
| Debian | gunicorn | trixie | 23.0.0-1 | fixed |
| Debian | gunicorn | bookworm | 20.1.0-6+deb12u1 | vulnerable |
| Suse | python-gunicorn | linux enterprise module for python 3 15 sp6 | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise high performance computing 15 sp4-espos | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise high performance computing 15 sp4-ltss | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise high performance computing 15 sp5-espos | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise high performance computing 15 sp5-ltss | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise server 15 sp4-ltss | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise server 15 sp5-ltss | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise server for sap applications 15 sp4 | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise server for sap applications 15 sp5 | 20.1.0-150400.12.9.1 | fixed |
| Opensuse | python-gunicorn | leap 15.6 | 20.1.0-150400.12.9.1 | fixed |
| Suse | python-gunicorn | linux enterprise module for public cloud 15 sp3 | 19.7.1-150000.3.10.1 | fixed |
| Suse | python-gunicorn | linux enterprise module for public cloud 15 sp4 | 19.7.1-150000.3.10.1 | fixed |
| Suse | python-gunicorn | linux enterprise module for public cloud 15 sp5 | 19.7.1-150000.3.10.1 | fixed |
| Suse | python-gunicorn | linux enterprise module for public cloud 15 sp6 | 19.7.1-150000.3.10.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gunicorn | source | sid | 23.0.0-1 | not yet assigned | Not reported | [1100989] |
| Debian | gunicorn | source | forky | 23.0.0-1 | not yet assigned | Not reported | [1100989] |
| Debian | gunicorn | source | trixie | 23.0.0-1 | not yet assigned | Not reported | [1100989] |
| Debian | gunicorn | source | bookworm | (unfixed) | not yet assigned | Not reported | [1100989] |
| Suse | python-gunicorn | rpm | linux enterprise module for python 3 15 sp6 | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise high performance computing 15 sp4-espos | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise high performance computing 15 sp4-ltss | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise high performance computing 15 sp5-espos | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise high performance computing 15 sp5-ltss | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise server 15 sp4-ltss | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise server 15 sp5-ltss | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise server for sap applications 15 sp4 | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise server for sap applications 15 sp5 | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Opensuse | python-gunicorn | rpm | leap 15.6 | 20.1.0-150400.12.9.1 | Not reported | SUSE-SU-2025:1008-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise module for public cloud 15 sp3 | 19.7.1-150000.3.10.1 | Not reported | SUSE-SU-2025:1002-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise module for public cloud 15 sp4 | 19.7.1-150000.3.10.1 | Not reported | SUSE-SU-2025:1002-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise module for public cloud 15 sp5 | 19.7.1-150000.3.10.1 | Not reported | SUSE-SU-2025:1002-1 | Not reported |
| Suse | python-gunicorn | rpm | linux enterprise module for public cloud 15 sp6 | 19.7.1-150000.3.10.1 | Not reported | SUSE-SU-2025:1002-1 | Not reported |
Notes
[bookworm] gunicorn: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gunicorn]Affected
Details (2)
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
- [gunicorn-examples]Affected
Source package: [gunicorn]
Details (2)
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
- [python3-gunicorn]Affected
Source package: [gunicorn]
Details (2)
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
20.1.0-6+deb12u1· all · bookwormAffected
dsa · gunicorn · debian · bookworm; dsa · gunicorn · debian · 12
[Debian 13 (Trixie)]
- [gunicorn]Fixed
Details (2)
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
- [gunicorn-examples]Fixed
Source package: [gunicorn]
Details (2)
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
- [python3-gunicorn]Fixed
Source package: [gunicorn]
Details (2)
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
23.0.0-1· all · trixieFixed · Fixed:
23.0.0-1dsa · gunicorn · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_1002-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-6827]
- [https://osv.dev/vulnerability/SUSE-SU-2025:1002-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:1008-1]
- [https://security-tracker.debian.org/tracker/CVE-2024-6827]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-6827.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0998.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]