CVE Explorer
CVE-2026-41181
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.44, 3.6.15, and 3.7.0-rc.3, there is an information disclosure vulnerability in Traefik's errors (custom error pages) middleware. When the backend returns a response matching the configured status range, the middleware forwards the original request's complete header set, including Authorization, Cookie, and other authentication material, to the separate error page service rather than only the minimal context needed to render the e
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":">= 3.7.0-rc.0, < 3.7.0-rc.3"},{"status":"affected","version":">= 3.0.0-beta1, < 3.6.14"},{"status":"affected","version":"< 2.11.43"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /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":"LOW","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-201","description":"CWE-201: Insertion of Sensitive Information Into Sent Data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/traefik/traefik/releases/tag/v2.11.44","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v2.11.44"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v3.6.15","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.6.15"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /containers/cna/references/2
{"name":"https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.3","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /containers/cna/references/3
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-p6hg-qh38-555r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-p6hg-qh38-555r"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0fddf71946bec84b264367b366bf4c95217a68259130f640c22ceaf6f7f7e0a · sha256:e671c6649cae78de… · /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.