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CVE-2026-29054

Traefik is an HTTP reverse proxy and load balancer. From version 2.11.9 to 2.11.37 and from version 3.1.3 to 3.6.8, there is a potential vulnerability in Traefik managing the Connection header with X-Forwarded headers. When Traefik processes HTTP/1.1 requests, the protection put in place to prevent the removal of Traefik-managed X-Forwarded headers (such as X-Real-Ip, X-Forwarded-Host, X-Forwarded-Port, etc.) via the Connection header does not handle case sensitivity correctly. The Connection to
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:884e1ffb9a2f5a3851c2df4e037d43f2a49fa3ddf9680757548ba3a8a3e4b992
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_devspaces:3.27::el9"],"defaultStatus":"affected","packageName":"devspaces/traefik-rhel9","product":"Red Hat OpenShift Dev Spaces 3.27","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1776718585","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/affected/0

{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 2.11.9, < 2.11.38"},{"status":"affected","version":">= 3.1.3, < 3.6.9"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-178","description":"Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/problemTypes/0/descriptions/0

{"cweId":"CWE-178","description":"CWE-178: Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_devspaces:3.27::el9"],"defaultStatus":"affected","packageName":"devspaces/traefik-rhel9","product":"Red Hat OpenShift Dev Spaces 3.27","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1776718585","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/affected/0
{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 2.11.9, < 2.11.38"},{"status":"affected","version":">= 3.1.3, < 3.6.9"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-178","description":"Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/problemTypes/0/descriptions/0
{"cweId":"CWE-178","description":"CWE-178: Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:10175"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/references/3
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-29054"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/references/0
{"name":"RHBZ#2444872","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2444872"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v2.11.38","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v2.11.38"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v3.6.9","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.6.9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/references/2
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-92mv-8f8w-wq52","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-92mv-8f8w-wq52"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29054.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e8cefdc1173209bf0856a10e302c879ae0011aad151a0a5d4d762b4c91e6769 · sha256:7632ce9d4eb424db… · /containers/adp/1/references/2

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.

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