CVE-2023-29013

HTTP header parsing could cause a deny of service

Published Apr 14, 2023 CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

traefik

affected

Version	Status	Constraints
`< 2.9.10`	affected	—
`= 2.10.0-rc1`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:traefik:traefik::::::::
	cpe:2.3:a:traefik:traefik:2.10.0:rc1::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2023-1226	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.
Github GHSA	GHSA-7hj9-rv74-5g92	Traefik HTTP header parsing could cause a denial of service

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 1.1% (1.085% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/traefik/traefik/commit/4ed3964b3586565519249bbdc55eb1b961c08c49
https://github.com/traefik/traefik/releases/tag/v2.10.0-rc2
https://github.com/traefik/traefik/releases/tag/v2.9.10
https://github.com/traefik/traefik/security/advisories/GHSA-7hj9-rv74-5g92
https://security.netapp.com/advisory/ntap-20230517-0008/

History

Jul 12, 2025 1:45 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.03255}`	epss `{'score': 0.02367}`

Feb 13, 2025 5:00 PM Description updated. Title updated View changes

Type	Values Removed	Values Added
Description	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.	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.
Title	HTTP header parsing could cause a deny of service	HTTP header parsing could cause a deny of service