CVE-2026-54356: high-severity vulnerability in budibase
Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.1epss 0.4%
from disclosure to weapon0 days
Published on NVDAug 17
1st PoCAug 14
exploitation probability
0.4%top 73% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Budibase is an open-source low-code platform. Prior to 3.41.3, POST /api/attachments/:datasourceId/url in packages/server/src/api/routes/static.ts and packages/server/src/api/controllers/static/index.ts allows an authenticated published-app user with the BASIC role to supply attacker-controlled bucket and key values and obtain signedUrl and publicUrl values backed by stored S3 datasource credentials. This issue is fixed in version 3.41.3.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Affected products
Budibase · budibasepublic PoCs found — 1
githubgithub.com/KovachVL/CVE-2026-54356★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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In the same product, most dangerous first.
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