# CVE-2026-31854: Cursor Affected by Arbitrary Code Execution via Prompt Injection and Whitelist Bypass


- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 11 Mar 2026
- **Updated:** 11 Mar 2026

## What is CVE-2026-31854?

CVE-2026-31854 is a high-severity vulnerability in cursor, published on 11 Mar 2026. 

### Official description

Cursor is a code editor built for programming with AI. Prior to 2.0 ,if a visited website contains maliciously crafted instructions, the model may attempt to follow them in order to “assist” the user. When combined with a bypass of the command whitelist mechanism, such indirect prompt injections could result in commands being executed automatically, without the user’s explicit intent, thereby posing a significant security risk. This vulnerability is fixed in 2.0.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-31854?

It affects 1 product.


Products: Anysphere Cursor.

## How do I fix CVE-2026-31854?

No fix has been published for CVE-2026-31854 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-31854 being exploited?

There is no known exploitation of CVE-2026-31854 in the wild and no public exploit code.

## Other vulnerabilities in cursor

- [CVE-2026-50548](https://insights.sbomify.com/CVE-2026-50548/): Cursor Desktop sandbox escape via agent-controlled working directory (critical 9.3)
- [CVE-2026-50549](https://insights.sbomify.com/CVE-2026-50549/): Cursor Desktop sandbox escape via symlink and failed path canonicalization (critical 9.3)
- [CVE-2025-64106](https://insights.sbomify.com/CVE-2025-64106/): Cursor: Speedbump Modal Bypass in MCP Server Deep-Link (high 8.8)
- [CVE-2025-64107](https://insights.sbomify.com/CVE-2025-64107/): Cursor is Vulnerable to Path Manipulation Using Backslashes on Windows (high 8.8)
- [CVE-2025-64108](https://insights.sbomify.com/CVE-2025-64108/): Cursor's Sensitive File Modification can Lead to NTFS Path Quirks (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-31854 and fix it if it is affected.

What it is: CVE-2026-31854 is a high-severity vulnerability in cursor, published on 11 Mar 2026. 
Exploitation: There is no known exploitation of CVE-2026-31854 in the wild and no public exploit code.

Affected product: cursor. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-31854/ (Markdown: https://insights.sbomify.com/CVE-2026-31854/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-31854
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31854
- OSV: https://osv.dev/vulnerability/CVE-2026-31854

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-31854/
Summaries are generated and may contain mistakes; the official description above is the record.