Vulnerability · Published Feb 6, 2026 · Assigned by VulDB

CVE-2026-1977isaacwasserman mcp-vegalite-server visualize_data eval code injection

Medium 6.3

In plain English

A medium-severity code injection in mcp-vegalite-server from isaacwasserman. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.3%top 80.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in isaacwasserman mcp-vegalite-server up to 16aefed598b8cd897b78e99b907f6e2984572c61. Affected by this vulnerability is the function eval of the component visualize_data. Such manipulation of the argument vegalite_specification leads to code injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
isaacwasserman	mcp-vegalite-server	16aefed598b8cd897b78e99b907f6e2984572c61

Weakness: CWE-94, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-344499 | isaacwasserman mcp-vegalite-server visualize_data eval code injection vdb-entry, technical-description
VDB-344499 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #743246 | GitHub mcp-vegalite-server master Code Injection third-party-advisory
https://github.com/isaacwasserman/mcp-vegalite-server/issues/9 exploit, issue-tracking
https://github.com/isaacwasserman/mcp-vegalite-server/ product