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CVE-2026-48020

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. This vulnerability exists in the StripPrefix middleware, allowing an unauthenticated attacker to bypass route-level authentication and authorization. By crafting a request path containing '..' or its percent-encoded form, an attacker can access protected backend paths, such as administrative or internal configuration endpoints, without proper authentication. This could lead to unauthorized information disclosure or modificatio
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:eded58e723c53d38f9f0b1499332fca7601c21744d5c3092111daaabb8b3928f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_devspaces:3"],"defaultStatus":"affected","packageName":"devspaces/traefik-rhel9","product":"Red Hat OpenShift Dev Spaces","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/affected/0

{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 3.7.0-ea.1, < 3.7.3"},{"status":"affected","version":">= 3.0.0-beta1, < 3.6.19"},{"status":"affected","version":"< 2.11.48"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-288","description":"CWE-288: Authentication Bypass Using an Alternate Path or Channel","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_devspaces:3"],"defaultStatus":"affected","packageName":"devspaces/traefik-rhel9","product":"Red Hat OpenShift Dev Spaces","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/affected/0
{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 3.7.0-ea.1, < 3.7.3"},{"status":"affected","version":">= 3.0.0-beta1, < 3.6.19"},{"status":"affected","version":"< 2.11.48"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-288","description":"CWE-288: Authentication Bypass Using an Alternate Path or Channel","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

7 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-48020"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/references/0
{"name":"RHBZ#2491915","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491915"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/adp/1/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v2.11.48","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v2.11.48"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v3.6.19","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.6.19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/references/2
{"name":"https://github.com/traefik/traefik/releases/tag/v3.7.3","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.7.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/references/3
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-xf64-8mw2-4gr2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-xf64-8mw2-4gr2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48020.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:01cdff92053afa748f29be58e072a2d886cfbc4e3dc85fd493ee5b2657fa59b2 · sha256:684060dd548b76d1… · /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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