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CVE-2026-45554

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside Starlette's FileResponse, which Uvicorn writes to the server log as a full traceback. Because the routes are reachable without authentication, a remote attacker can amplify log volume and consume disk and log-p
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:228eaff6ade240dfd904d6ebe60b231f0318ab2ef7ebd2062f209e503708d9c1
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-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"nicegui","vendor":"zauberzeug","versions":[{"status":"affected","version":"< 3.12.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/zauberzeug/nicegui/releases/tag/v3.12.0","tags":["x_refsource_MISC"],"url":"https://github.com/zauberzeug/nicegui/releases/tag/v3.12.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /containers/cna/references/1
{"name":"https://github.com/zauberzeug/nicegui/security/advisories/GHSA-pq7c-x8g4-rvp6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zauberzeug/nicegui/security/advisories/GHSA-pq7c-x8g4-rvp6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09046322b391337709a3509fdbd21c28acfe0d780896d7761188652d6bbfc95e · sha256:b67cfd47806094da… · /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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