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CVE-2026-50136

Budibase is an open-source low-code platform. Prior to 3.39.3, the application server exposes an unauthenticated endpoint that generates S3 PutObject presigned URLs using credentials stored in a workspace datasource. The route is protected only by the recaptcha middleware and does not require authentication, table permission, datasource permission, or builder access. A public caller who knows a workspace ID and S3 datasource ID can request a signed upload URL for attacker-controlled bucket and k
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a504ada8be3d6f6dd37c80f3d99d9b3b1b62288e281b1dcd0642642ee8f09cd8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"budibase","vendor":"Budibase","versions":[{"status":"affected","version":"< 3.39.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:76283362a8621e1e27dba3d03f2f78e78ee857d9b4c966b87dd3f0778fdc7504 · sha256:7fdb271defaeff38… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:76283362a8621e1e27dba3d03f2f78e78ee857d9b4c966b87dd3f0778fdc7504 · sha256:7fdb271defaeff38… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:76283362a8621e1e27dba3d03f2f78e78ee857d9b4c966b87dd3f0778fdc7504 · sha256:7fdb271defaeff38… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-jj36-r9w3-3pfh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76283362a8621e1e27dba3d03f2f78e78ee857d9b4c966b87dd3f0778fdc7504 · sha256:7fdb271defaeff38… · /containers/adp/0/references/0
{"name":"https://github.com/Budibase/budibase/security/advisories/GHSA-jj36-r9w3-3pfh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-jj36-r9w3-3pfh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76283362a8621e1e27dba3d03f2f78e78ee857d9b4c966b87dd3f0778fdc7504 · sha256:7fdb271defaeff38… · /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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