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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| traefik | traefik | < 2.9.10, = 2.10.0-rc1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | traefik | 2.10.1-1.1 | openSUSE-SU-2024:13007-1 |
| openSUSE Tumbleweed | traefik2 | 2.11.5-1.1 | openSUSE-SU-2024:14076-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | traefik | 2.9.10-r0 | — |
| Alpine v3.23 | traefik | 2.9.10-r0 | — |
| Alpine v3.22 | traefik | 2.9.10-r0 | — |
| Alpine v3.21 | traefik | 2.9.10-r0 | — |
| Alpine v3.20 | traefik | 2.9.10-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | traefik | 2.9.10-r0 | — |
| Alpine v3.18 | traefik | 2.9.10-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/traefik/traefik/v2 | < 2.9.10 | 2.9.10 | GHSA-7hj9-rv74-5g92 |
| Go | github.com/traefik/traefik/v2 | >= 2.10.0-rc1, < 2.10.0-rc2 | 2.10.0-rc2 | GHSA-7hj9-rv74-5g92 |
Advisories 2
- openSUSE-SU-2024:14076-1 traefik2-2.11.5-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13007-1 traefik-2.10.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/traefik/traefik/security/advisories/GHSA-7hj9-rv74-5g92
- 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://security.netapp.com/advisory/ntap-20230517-0008/