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CVE Record

CVE-2026-82244: Budibase before 3.41.3 Remote Code Execution via Plugin eval()

Budibase versions before 3.41.3 contain a remote code execution vulnerability in plugin handling that allows authenticated admin users to execute arbitrary code by uploading a malicious plugin tarball. The server calls eval() on plugin JavaScript files without sandboxing in the main Node.js process, enabling attackers to exfiltrate environment variables and credentials with root privileges in default deployments.

CriticalCVSS 9.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Budibase servers earlier than 3.41.3 allow an authenticated administrator to upload a malicious plugin that runs arbitrary code. Successful abuse could expose credentials, alter applications, disrupt service, and compromise connected systems. Default deployments may execute this code with root privileges, substantially increasing impact.

Executive priority

Treat this as an urgent privileged-access risk. Patch affected production and externally reachable instances first, then review administrative and plugin activity. Because compromise could expose shared credentials and downstream services, involve incident response if suspicious uploads or administrator access are found.

Technical view

Plugin handling evaluates uploaded JavaScript with eval() inside the main Node.js process without sandboxing. An authenticated administrator with plugin-upload capability can therefore execute arbitrary server-side code with the process privileges. The supplied record identifies Budibase server versions before 3.41.3 as affected and classifies the issue as CWE-94.

Likely exposure

Exposure is highest for Budibase servers earlier than 3.41.3 where administrators can upload plugins. Authentication and high privileges are required, so the supplied evidence does not indicate direct unauthenticated compromise. Internet accessibility still increases account-takeover and malicious-insider risk.

Exploitation context

The source bundle marks this CVE as absent from KEV, and the supplied sources do not establish active exploitation. Exploitation requires authenticated administrative access and a malicious plugin upload. Successful execution occurs in the main server process and may inherit root privileges in default deployments.

Researcher notes

CVSS 4.0 is 9.4 with high confidentiality, integrity, and availability impact across vulnerable and subsequent systems. The critical impact comes from unsandboxed eval() in the main Node.js process. Administrative privileges are a prerequisite, but successful abuse may cross application boundaries through environment credentials.

Mitigation direction

  • Upgrade every Budibase server to version 3.41.3 or later using the vendor's published guidance.
  • Until upgraded, strictly limit administrator access and suspend untrusted plugin uploads where operationally feasible.
  • Review uploaded plugins and administrative activity; rotate exposed credentials if compromise is suspected.
  • Confirm any additional hardening or mitigation requirements in the Budibase security advisory.

Validation and detection

  • Inventory Budibase server versions and flag every instance earlier than 3.41.3.
  • Confirm the deployed version after upgrading and test that approved applications and plugins still function.
  • Review plugin-upload records, administrator logins, and unexpected server processes during the exposure period.
  • Investigate unexplained use of credentials stored in the server environment or access to connected systems.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-94: Code execution behavior lookup

Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-82244 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.4 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.4CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H——VulnCheck
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H2.36VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

9.4Critical
CVSS 4.0 vector shape for CVE-2026-82244Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
budibaseserver0, 3.41.3unaffected
Weakness

CWE details

CWE-94

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-94 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

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