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CVE-2026-38991

Cockpit 2.13.5 and earlier is affected by a misconfiguration within the Bucket component _isFileTypeAllowed function where a specially crafted filename bypasses an extension filter. This allows an authenticated attacker to rename arbitrary files with the .php file extension enabling arbitrary code to be executed on the underlying server.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f1cd0b66bc736de7457d36401a29c99ef85d4d10a652f8e10884d80a2519be66
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

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-434","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-434","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://felsec.com/posts/cockpit-cms-2.13.5-multi-vulns/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://felsec.com/posts/cockpit-cms-2.13.5-multi-vulns/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /containers/adp/0/references/0
{"url":"https://github.com/Cockpit-HQ/Cockpit/releases/tag/2.14.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d79435c1be395e7111467ff2f1d01b9cb0220d0c164fbf27c44a6946687b7bbe · sha256:18479eaac9700264… · /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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