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CVE-2026-12821

A vulnerability was determined in FlowiseAI Flowise up to 3.1.2. The impacted element is an unknown function of the file packages/components/nodes/documentloaders/S3/S3.ts of the component S3 Document Loader. Executing a manipulation can lead to path traversal. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5ccaaeb653fbb307d0c27ea29593dd98602916c5bb1181977b0ed74acdbf09fa
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

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

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/3/cvssV2_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:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/1/cvssV3_1

{"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:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/0/cvssV4_0

{"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:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/2/cvssV3_0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*"],"modules":["S3 Document Loader"],"product":"Flowise","vendor":"FlowiseAI","versions":[{"status":"affected","version":"3.1.0"},{"status":"affected","version":"3.1.1"},{"status":"affected","version":"3.1.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/3/cvssV2_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:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/1/cvssV3_1
{"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:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/0/cvssV4_0
{"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:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/metrics/2/cvssV3_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"Path Traversal","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://github.com/dxz0069/softwareoverflow/blob/main/flowise_s3_loader_object_key_path_traversal_vulndb.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/references/4
{"name":"CVE-2026-12821 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-12821"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/references/2
{"name":"Submit #837578 | FlowiseAI/Flowise - `packages/components/nodes/documentloaders/S3/S3.ts` - `S3Directory / S3File document loader temporary-file handling` 3.1.2 Path Traversal / Arbitrary Local File Write / Unsafe Cleanup","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/837578"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/references/3
{"name":"VDB-372611 | FlowiseAI Flowise S3 Document Loader S3.ts path traversal","tags":["vdb-entry"],"url":"https://vuldb.com/vuln/372611"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/references/0
{"name":"VDB-372611 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/372611/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6eeb33fa12b7adaa37be6587f400cd24c56d5b24aa7546643add3d169bf3ab4b · sha256:abf55902241878fc… · /containers/cna/references/1

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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