Vulnerability · Published Aug 9, 2026 · Assigned by VulDB

CVE-2026-19372Handwriting-OCR handwriting-ocr-mcp-server upload_document index.ts fs.readFileSync path traversal

Medium 5.3

In plain English

A medium-severity path traversal in handwriting-ocr-mcp-server from Handwriting-OCR. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 89.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in Handwriting-OCR handwriting-ocr-mcp-server 0.1.0. Affected by this vulnerability is the function fs.readFileSync of the file src/index.ts of the component upload_document. Performing a manipulation of the argument File results in path traversal. Attacking locally is a requirement. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
Handwriting-OCR	handwriting-ocr-mcp-server	0.1.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-387256 | Handwriting-OCR handwriting-ocr-mcp-server upload_document index.ts fs.readFileSync path traversal vdb-entry, technical-description
VDB-387256 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-19372 | CVE Analysis and Report third-party-advisory
Submit #866270 | Handwriting-OCR handwriting-ocr-mcp-server 0.1.0 Path Traversal third-party-advisory
https://github.com/Handwriting-OCR/handwriting-ocr-mcp-server/issues/6 issue-tracking
https://github.com/Handwriting-OCR/handwriting-ocr-mcp-server/ product