dbcve.org
InjectionWeakness · CWE-74

CVE-2026-4511

MEDIUM · 6.3 CVSS v3.1 Published 2026-03-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A security vulnerability has been detected in vanna-ai vanna up to 2.0.2. Affected is the function exec of the file /src/vanna/legacy. Such manipulation leads to injection. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

vanna-ai vanna up to version 2.0.2 contains an injection vulnerability in the exec function within /src/vanna/legacy. The vulnerability allows remote attackers to inject malicious input through this function, likely achieving arbitrary command execution. The issue affects the legacy module specifically and was publicly disclosed.

MitigationImplement strict input validation and sanitization on all inputs to the exec function, or refactor to eliminate the use of exec entirely using parameterized approaches. Consider migrating legacy functionality to secure alternatives.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed vanna-ai version
    Run `pip show vanna` or `pip list | grep vanna` to see the installed version number
    Affected if Version is 2.0.2 or lower
  2. Locate the legacy module
    Search for the presence of /src/vanna/legacy directory or legacy.py file in the installed vanna package path (typically in site-packages/vanna/)
    Affected if The legacy module directory or file exists in the installation
  3. Verify if legacy module is imported
    Search codebase for `from vanna.legacy import` or `import vanna.legacy` statements, or check if legacy is loaded in any Python files
    Affected if The legacy module is imported or loaded in the application code
  4. Identify exec function usage in legacy
    Search for calls to exec, exec(), or any function that invokes the legacy exec within the codebase or running application
    Affected if The exec function from the legacy module is actually being called with user-supplied data

A user is affected if they have vanna-ai version 2.0.2 or lower installed AND the legacy module is imported AND the exec function receives untrusted input.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement strict input validation and sanitization on all inputs to the exec function, or refactor to eliminate the use of exec entirely using parameterized approaches. Consider migrating legacy functionality to secure alternatives.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-4511 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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