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CVE-2026-33332

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, NiceGUI's app.add_media_file() and app.add_media_files() media routes accept a user-controlled query parameter that influences how files are read during streaming. The parameter is passed to the range-response implementation without validation, allowing an attacker to bypass chunked streaming and force the server to load entire files into memory at once. With large media files and concurrent requests, this can lead to excessive memo
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ec9854570363e290d3c138d40a3ce5d3567fc5facf01f897d3094854c121c7c7
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:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"nicegui","vendor":"zauberzeug","versions":[{"status":"affected","version":"< 3.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/metrics/0/cvssV4_0

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:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/zauberzeug/nicegui/commit/9026962b8c4f3f225c98b2fbc35aa6b60cb3495b","tags":["x_refsource_MISC"],"url":"https://github.com/zauberzeug/nicegui/commit/9026962b8c4f3f225c98b2fbc35aa6b60cb3495b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/references/1
{"name":"https://github.com/zauberzeug/nicegui/releases/tag/v3.9.0","tags":["x_refsource_MISC"],"url":"https://github.com/zauberzeug/nicegui/releases/tag/v3.9.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /containers/cna/references/2
{"name":"https://github.com/zauberzeug/nicegui/security/advisories/GHSA-w5g8-5849-vj76","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zauberzeug/nicegui/security/advisories/GHSA-w5g8-5849-vj76"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fa4a4ef0f6540188ba69aab4e5a8274b02697f2a87740d4cdd5d3398e07795a · sha256:474990fe37df457a… · /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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