CVE Explorer
CVE-2026-54764
Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of the sanitized forwarded request. As a result, an unauthenticated remote attacker can inject an X-Forwarded-Proto: https header over a plain HTTP connection and cause Traefik to forward X-Forwarded-Port: 4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":"< 2.11.51"},{"status":"affected","version":">= 3.0.0, < 3.6.22"},{"status":"affected","version":">= 3.7.0, < 3.7.6"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/traefik/traefik/commit/7ae92d8c2c10ac04ef5a03df0ed5019ce0f44b2d","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/commit/7ae92d8c2c10ac04ef5a03df0ed5019ce0f44b2d"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/references/2
{"name":"https://github.com/traefik/traefik/pull/13344","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/pull/13344"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-3q9r-p662-5j8m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-3q9r-p662-5j8m"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:abbc7cc7794d7d71381bd591f00d79797f82a5656be2287924c71b01fa188635 · sha256:7153228bccd508e4… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.