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CVE-2026-23849

File Browser provides a file managing interface within a specified directory and can be used to upload, delete, preview, rename, and edit files. Prior to version 2.55.0, the JSONAuth. Auth function contains a logic flaw that allows unauthenticated attackers to enumerate valid usernames by measuring the response time of the /api/login endpoint. The vulnerability exists due to a "short-circuit" evaluation in the authentication logic. When a username is not found in the database, the function retur
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9be2f5fa1207dacb45c645f943166d54430bb23eeafe2f7c764a7c24d2ad6eb7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"filebrowser","vendor":"filebrowser","versions":[{"status":"affected","version":"< 2.55.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c0b9add72c157015b16d4adf9603c90b5e3eaf8e9ee941fe621346d8a67214a4 · sha256:418a500dfa80c785… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c0b9add72c157015b16d4adf9603c90b5e3eaf8e9ee941fe621346d8a67214a4 · sha256:418a500dfa80c785… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-208","description":"CWE-208: Observable Timing Discrepancy","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c0b9add72c157015b16d4adf9603c90b5e3eaf8e9ee941fe621346d8a67214a4 · sha256:418a500dfa80c785… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/filebrowser/filebrowser/commit/24781badd413ee20333aba5cce1919d676e01889","tags":["x_refsource_MISC"],"url":"https://github.com/filebrowser/filebrowser/commit/24781badd413ee20333aba5cce1919d676e01889"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c0b9add72c157015b16d4adf9603c90b5e3eaf8e9ee941fe621346d8a67214a4 · sha256:418a500dfa80c785… · /containers/cna/references/1
{"name":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-43mm-m3h2-3prc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-43mm-m3h2-3prc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c0b9add72c157015b16d4adf9603c90b5e3eaf8e9ee941fe621346d8a67214a4 · sha256:418a500dfa80c785… · /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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