CVE-2026-30240Known exploitationPublic exploitNetwork attack vector

Authenticated file read via PWA icon path traversal

Published Mar 9, 2026 · Updated Mar 9, 2026

Path traversal in Budibase 3.31.5 and earlier allows remote authenticated users with builder privileges to read arbitrary server files. The processPWAZip handler joins each user-controlled icons.json src value to a temporary extraction directory without verifying that the resolved path remains inside it, then uploads the selected file to object storage. Builder access and a workspace application are required; exposed files can disclose environment secrets and service credentials through returned signed URLs.

CVSS severity9.6
Critical
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Budibase 3.31.5 and earlier allows remote authenticated users with builder privileges to read arbitrary server files. The processPWAZip handler joins each user-controlled icons.json src value to a temporary extraction directory without verifying that the resolved path remains inside it, then uploads the selected file to object storage. Builder access and a workspace application are required; exposed files can disclose environment secrets and service credentials through returned signed URLs.

The record

CVE
CVE-2026-30240
Published
Mar 9, 2026
Updated
Mar 9, 2026
Vendor
Budibase
Product
Budibase
Classifications
CWE-73, CWE-22, T1552.001, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 4, 2026Exploitation reportedBudibase Cloud production validation
  2. Mar 9, 2026CVE publishedPublication date reported by the CVE source.
  3. Mar 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 3.31.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Budibase · Budibaseversion=<= 3.31.5

Published CVSS scores

9.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1552.001Credentials In Files
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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