Multiple vulnerabilities in Traefik (July 2, 2026)
Multiple vulnerabilities have been discovered in Traefik. They allow an attacker to cause security policy bypass.
CSIRTS triage
- What
- Multiple vulnerabilities allow for security policy bypass.
- Who is affected
- Users of Traefik are affected.
- Urgency
- Remediation is urgent due to the potential for exploitation.
- Action
- Apply patches or mitigations as provided by Traefik.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0823/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-547630.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-547640.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-547650.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-54763 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-54764 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-54765 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in HPE Aruba Networking Private 5G Core (August 10, 2026)cert-fr-avis
- highGHSA-x677-9fxg-v5c5: Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField und…ghsa
- mediumGHSA-6p8f-p8j2-rqmv: Traefik: Gateway HTTPRoute backendRef filters can leak backend context across routes shar…ghsa
- mediumGHSA-3q9r-p662-5j8m: Traefik: ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded…ghsa
- highCVE-2026-54765: Traefik is an open source HTTP reverse proxy and load balancer. From v3.7.0 prior to v3.7.6, T…nvd
- mediumCVE-2026-54764: Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Tr…nvd
- criticalCVE-2026-54763: Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Tr…nvd
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