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CVE-2026-73307— Budibase: SSRF via bare fetch() in uploadUrl during AI table generation

Quick assessment

Affected
Budibase budibase
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Budibase是英国Budibase公司开源的一款低代码应用构建平台。 Budibase 3.39.4之前版本存在服务端请求伪造漏洞，该漏洞源于uploadUrl使用裸服务器端fetch，未经过fetchWithBlacklist验证，可能导致服务端请求伪造。

CVSS 4.9 · Medium EPSS 0.43% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
Budibase budibase < 3.39.4 affected
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I. Basic Information for CVE-2026-73307

Vulnerability Information
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Vulnerability Title
Budibase: SSRF via bare fetch() in uploadUrl during AI table generation
Source: CVE Program / CVE List V5
Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI table-generation feature could cause an attachment value to reference an internal service or cloud metadata endpoint, and the response would be stored as an attachment without fetchWithBlacklist validation. This issue is fixed in version 3.39.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Budibase 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Budibase是英国Budibase公司开源的一款低代码应用构建平台。 Budibase 3.39.4之前版本存在服务端请求伪造漏洞，该漏洞源于uploadUrl使用裸服务器端fetch，未经过fetchWithBlacklist验证，可能导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Budibase budibase < 3.39.4 -

II. Public POCs for CVE-2026-73307

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III. Intelligence Information for CVE-2026-73307

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Patches & Fixes for CVE-2026-73307 (2)

Vendor Advisories for CVE-2026-73307 (1)

Vendor Pages for CVE-2026-73307 (1)

Same Patch Batch · Budibase · 2026-08-12 · 9 CVEs total

CVE-2026-73300 9.6 CRITICAL Budibase: SQL Injection via `multipleStatements: true`
CVE-2026-73407 9.0 CRITICAL Budibase: Unauthenticated REST Datasource Credential Theft via Cross-Origin Auth Leak (byp
CVE-2026-73303 8.2 HIGH Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId
CVE-2026-73406 7.5 HIGH Budibase: Unauthenticated user information disclosure via public tenant user lookup endpoi
CVE-2026-73308 5.7 MEDIUM Budibase: OAuth2 Token Disclosure via Automation Test Results Broadcast to Other Builders
CVE-2026-73306 5.3 MEDIUM Budibase: Account Enumeration via Login Lockout Response Differential
CVE-2026-73409 5.1 MEDIUM Budibase: Server Filesystem Existence/Read Oracle via Builder-Controlled MongoDB tlsCertif
CVE-2026-73301 4.3 MEDIUM Budibase: Missing RBAC on GET /api/global/groups allows BASIC users to enumerate all tenan

IV. Related Vulnerabilities

Same product: budibase
Same vendor: Budibase
Same weakness: CWE-918

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