Skip to main content

Vanna CVE-2026-4511

| EUVDEUVD-2026-14244 LOW
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2026-03-21 VulDB
2.1
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.1 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

7
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
5.3 (MEDIUM) 2.1 (LOW)
CVSS changed
Apr 24, 2026 - 16:37 NVD
6.3 (MEDIUM) 5.3 (MEDIUM)
PoC Detected
Mar 23, 2026 - 14:31 vuln.today
Public exploit code
EUVD ID Assigned
Mar 21, 2026 - 08:45 euvd
EUVD-2026-14244
Analysis Generated
Mar 21, 2026 - 08:45 vuln.today
CVE Published
Mar 21, 2026 - 08:32 nvd
MEDIUM 6.3

DescriptionCVE.org

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.

AnalysisAI

A code injection vulnerability exists in vanna-ai vanna up to version 2.0.2, specifically in the exec function of the /src/vanna/legacy file. This authenticated remote code injection allows attackers with login credentials to execute arbitrary code with limited impact on confidentiality, integrity, and availability. A proof-of-concept exploit has been publicly disclosed on GitHub, and the vendor has not responded to early disclosure notifications, making this an active concern for deployed instances.

Technical ContextAI

The vulnerability is rooted in CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which describes unsafe handling of user input before passing it to dangerous functions. The vanna-ai vanna product (cpe:2.3:a:vanna-ai:vanna:*:*:*:*:*:*:*:*) is a Python-based AI framework for natural language to SQL processing. The exec function in the legacy module appears to dynamically execute code without proper input validation or sanitization, allowing attackers to inject malicious code that gets interpreted as executable Python. This is a classic injection vulnerability where user-controlled input reaches a dangerous function (exec) without neutralization.

RemediationAI

Immediately upgrade vanna-ai vanna to a version newer than 2.0.2 if available from the vendor; however, since the vendor has not responded to disclosure and no official advisory exists, check the vanna GitHub repository or PyPI for the latest patched version. As an interim mitigation, restrict access to vanna deployments to trusted users only, disable or remove the legacy module if it is not required for your use case, implement network segmentation to limit lateral movement in case of code execution, and monitor for suspicious activity in vanna application logs. Consider implementing a Web Application Firewall (WAF) or input validation layer in front of vanna to detect injection attempts. Until a vendor patch is confirmed available, avoid deploying vanna-ai in environments where authentication alone cannot be trusted.

Share

CVE-2026-4511 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy