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CVE-2026-3749

A weakness has been identified in Bytedesk up to 1.3.9. This vulnerability affects the function handleFileUpload of the file source-code/src/main/java/com/bytedesk/core/upload/UploadRestService.java of the component SVG File Handler. Executing a manipulation can lead to unrestricted upload. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.4.5.1 is able to resolve this issue. This patch is called 975e39e4d
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a9861d187bed11a422f73bf8bec861292179b2b4c6e278f049ffb18da9bb8808
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-434","description":"Unrestricted Upload","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-284","description":"Improper Access Controls","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"modules":["SVG File Handler"],"product":"Bytedesk","vendor":"n/a","versions":[{"status":"affected","version":"1.3.0"},{"status":"affected","version":"1.3.1"},{"status":"affected","version":"1.3.2"},{"status":"affected","version":"1.3.3"},{"status":"affected","version":"1.3.4"},{"status":"affected","version":"1.3.5"},{"status":"affected","version":"1.3.6"},{"status":"affected","version":"1.3.7"},{"status":"affected","version":"1.3.8"},{"status":"affected","version":"1.3.9"},{"status":"unaffected","version":"1.4.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-434","description":"Unrestricted Upload","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-284","description":"Improper Access Controls","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/problemTypes/1/descriptions/0

Source references

9 source assertions
{"tags":["product"],"url":"https://github.com/Bytedesk/bytedesk/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/8
{"tags":["patch"],"url":"https://github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64eff7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/6
{"tags":["issue-tracking"],"url":"https://github.com/Bytedesk/bytedesk/issues/19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/3
{"tags":["exploit","issue-tracking"],"url":"https://github.com/Bytedesk/bytedesk/issues/19#issue-3993480676"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/5
{"tags":["issue-tracking"],"url":"https://github.com/Bytedesk/bytedesk/issues/19#issuecomment-3976672845"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/4
{"tags":["patch"],"url":"https://github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/7
{"name":"VDB-349727 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.349727"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/1
{"name":"VDB-349727 | Bytedesk SVG File UploadRestService.java handleFileUpload unrestricted upload","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.349727"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/0
{"name":"Submit #768030 | Bytedesk <=1.3.9 Unrestricted Upload of File with Dangerous Type (CWE-434)","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.768030"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d46c7ccfd37e8d81963c7a945abadf5105725c1e0b98d22b3b8bb705fc290422 · sha256:48be7215f8503d43… · /containers/cna/references/2

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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