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CVE-2026-40304

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b56a81afeff0d1a3ec9962f8adf0f72a32e590febec45700095afa176c1cd34d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"zrok","vendor":"openziti","versions":[{"status":"affected","version":"< 2.0.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/openziti/zrok/releases/tag/v2.0.1","tags":["x_refsource_MISC"],"url":"https://github.com/openziti/zrok/releases/tag/v2.0.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /containers/cna/references/1
{"name":"https://github.com/openziti/zrok/security/advisories/GHSA-3jpj-v3xr-5h6g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/openziti/zrok/security/advisories/GHSA-3jpj-v3xr-5h6g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee6a379f8faca4d4d9346d6cec43c3e4f928e1ad2647695c92d0e40de68bfff0 · sha256:dfa6ffcb20ee37fa… · /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.

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