CVE-2023-29013
HTTP header parsing could cause a deny of service
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
HTTP header parsing could cause a deny of service
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
- Record
CVE-2023-29013- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2023-1226
7.5
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
- Record
EUVD-2023-1226- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7hj9-rv74-5g92
7.5
Traefik HTTP header parsing could cause a denial of service
Impact
There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service.
References
Patches
- https://github.com/traefik/traefik/releases/tag/v2.9.10
- https://github.com/traefik/traefik/releases/tag/v2.10.0-rc2
Workarounds
No workaround.
For more information
If you have any questions or comments about this advisory, please open an issue.
- Record
GHSA-7hj9-rv74-5g92- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
7.5
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
- Record
CVE-2023-29013- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVALPINE-CVE-2023-29013
7.5
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
- Record
ALPINE-CVE-2023-29013- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
OSV
7.5
HTTP header parsing could cause a deny of service
Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.
- Record
CVE-2023-29013- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVGHSA-7hj9-rv74-5g92
7.5
Traefik HTTP header parsing could cause a denial of service
Impact
There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service.
References
Patches
- https://github.com/traefik/traefik/releases/tag/v2.9.10
- https://github.com/traefik/traefik/releases/tag/v2.10.0-rc2
Workarounds
No workaround.
For more information
If you have any questions or comments about this advisory, please open an issue.
- Record
GHSA-7hj9-rv74-5g92- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:13007-1 No score
traefik-2.10.1-1.1 on GA media
These are all security issues fixed in the traefik-2.10.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:13007-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:14076-1 No score
traefik2-2.11.5-1.1 on GA media
These are all security issues fixed in the traefik2-2.11.5-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:14076-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/traefik/traefik/v2Go |
before 2.9.10 | 2.9.10 |
github.com/traefik/traefik/v2Go |
2.10.0-rc1 to 2.10.0-rc1 | 2.10.0-rc2 |
traefikAlpine:v3.18 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.19 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.20 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.21 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.22 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.23 |
before 2.9.10-r0 | 2.9.10-r0 |
traefikAlpine:v3.24 |
before 2.9.10-r0 | 2.9.10-r0 |
github.com/traefik/traefik/v2Go |
2.10.0-rc1 up to 2.10.0-rc2 | 2.10.0-rc2 |
traefikopenSUSE:Tumbleweed |
before 2.10.1-1.1 | 2.10.1-1.1 |
traefik2openSUSE:Tumbleweed |
before 2.11.5-1.1 | 2.11.5-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-29013 is a high vulnerability (CVSS 7.5) in Traefik, published April 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.08%, the 65th percentile. Fixed in github.com/traefik/traefik/v2 2.9.10.
References
github.com/traefik/traefik/security/advisories/GHSA-7hj9-rv74-5g92
github.com/traefik/traefik/commit/4ed3964b3586565519249bbdc55eb1b961c08c49
github.com/traefik/traefik/releases/tag/v2.10.0-rc2
github.com/traefik/traefik/releases/tag/v2.9.10
security.netapp.com/advisory/ntap-20230517-0008
github.com/advisories/GHSA-8v5j-pwr7-w5f8
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groups.google.com/g/golang-announce/c/Xdv6JL9ENs8/m/OV40vnafAwAJ
nvd.nist.gov/vuln/detail/CVE-2023-29013
github.com/advisories/GHSA-7hj9-rv74-5g92
security.alpinelinux.org/vuln/CVE-2023-29013
github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29013.json
github.com/traefik/traefik
suse.com/security/cve/CVE-2022-41724
suse.com/security/cve/CVE-2023-24534
suse.com/security/cve/CVE-2023-29013
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