Medium severity5.9NVD Advisory· Published Dec 4, 2023· Updated Jun 17, 2026
CVE-2023-47124
CVE-2023-47124
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/traefik/traefik/v2Go | < 2.10.6 | 2.10.6 |
github.com/traefik/traefik/v3Go | < 3.0.0-beta5 | 3.0.0-beta5 |
Affected products
13< 2.10.6+ 5 more
- (no CPE)range: < 2.10.6
- cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*range: <=2.10.5
- cpe:2.3:a:traefik:traefik:3.0.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:traefik:traefik:3.0.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:traefik:traefik:3.0.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:traefik:traefik:3.0.0:beta4:*:*:*:*:*:*
- ghsa-coords7 versionspkg:golang/github.com/traefik/traefik/v2pkg:golang/github.com/traefik/traefik/v3pkg:apk/chainguard/traefikpkg:apk/chainguard/traefik-fipspkg:apk/wolfi/traefikpkg:rpm/opensuse/traefik&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/traefik2&distro=openSUSE%20Tumbleweed
< 2.10.6+ 6 more
- (no CPE)range: < 2.10.6
- (no CPE)range: < 3.0.0-beta5
- (no CPE)range: < 2.10.6-r0
- (no CPE)range: < 0
- (no CPE)range: < 2.10.6-r0
- (no CPE)range: < 2.10.7-1.1
- (no CPE)range: < 2.11.5-1.1
Patches
Vulnerability mechanics
References
10- github.com/advisories/GHSA-8g85-whqh-cr2fghsaADVISORY
- github.com/traefik/traefik/security/advisories/GHSA-8g85-whqh-cr2fnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2023-47124ghsaADVISORY
- doc.traefik.io/traefik/https/acme/nvdProductWEB
- doc.traefik.io/traefik/https/acme/nvdProductWEB
- doc.traefik.io/traefik/https/acme/nvdProductWEB
- github.com/traefik/traefik/releases/tag/v2.10.6nvdRelease NotesWEB
- github.com/traefik/traefik/releases/tag/v3.0.0-beta5nvdRelease NotesWEB
- www.cloudflare.com/learning/ddos/ddos-attack-tools/slowlorisnvdWEB
- www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris/nvd
News mentions
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