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CVE-2026-30662

ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager component. The 'download' method in 'concrete/controllers/backend/file.php' improperly manages memory when creating zip archives. It uses 'ZipArchive::addFromString' combined with 'file_get_contents', which loads the entire content of every selected file into PHP memory. An authenticated attacker can exploit this by requesting a bulk download of large files, triggering an Out-Of-Memory (OOM) condition that ca
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:72655907f6e6d1a2cd302b58cace26f714d39e00804172808663beb10b4e49dd
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:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /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:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/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:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /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:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://wang1rrr.github.io/2026/02/11/CVE-Report-ConcreteCMS-DoS/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d1bdc8c8a051a0efd033b0e38bb02c25c9c66e2e8134e432d35422dfc4c1af81 · sha256:91e4ade3ecf35bca… · /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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