CVSS 3.1
5.9 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2023-47124
Medium (5.9) in traefik traefik. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in github.com/traefik/traefik/v2 2.10.6.
Traefik is an open source HTTP reverse proxy and load balancer. When Traefik is configured to use the `HTTPChallenge` to generate and renew the Let's Encrypt TLS certificates, the delay authorized to solve the challenge (50 seconds) can be exploited by attackers to achieve a `slowloris attack`. This vulnerability has been patch in version 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. Users unable to upgrade should replace the `HTTPChallenge` with the `TLSChallenge` or the `DNSChallenge`.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWE
- CWE-772
- Published
- Modified
- Record from
- the NVD, synced
Affected
- traefik:traefik
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8g85-whqh-cr2f | Go | github.com/traefik/traefik/v2 | <2.10.6 | 2.10.6 |
| GHSA-8g85-whqh-cr2f | Go | github.com/traefik/traefik/v3 | <3.0.0-beta5 | 3.0.0-beta5 |
| GO-2023-2381 | Go | github.com/traefik/traefik | all versions | no fix published |
| GO-2023-2381 | Go | github.com/traefik/traefik/v2 | <2.10.6 | 2.10.6 |
| GO-2023-2381 | Go | github.com/traefik/traefik/v3 | <3.0.0-beta5 | 3.0.0-beta5 |