# CVE-2026-57452: Vim: Out-of-bounds Read with libsodium-encrypted Files

> An attacker can cause a denial of service in Vim by providing a specially crafted encrypted file that triggers an integer underflow and out-of-bounds read.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 25 Jun 2026
- **Updated:** 25 Jun 2026
- **Also known as:** ALPINE-CVE-2026-57452, AZL-91098, BELL-CVE-2026-57452, DEBIAN-CVE-2026-57452, ECHO-36e6-1a60-39db, GHSA-c4j9-wr9j-4486, MINI-f8cf-r3rj-gw6c, UBUNTU-CVE-2026-57452

## What is CVE-2026-57452?

CVE-2026-57452 is a medium-severity vulnerability in Vim Vim, published on 25 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Vim is an open source, command line text editor. Prior to 9.2.0671, when Vim opens a file encrypted with the VimCrypt~04! or VimCrypt~05!
method (xchacha20poly1305, requires the +sodium feature) whose body is shorter than a single libsodium secretstream header, an unsigned length calculation underflows and a subsequent decryption call reads far past the end of the input buffer, crashing Vim. This vulnerability is fixed in 9.2.0671.

Weakness: CWE-191 (Integer Underflow (Wrap or Wraparound)), CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2026-57452?

It affects 1 product.


Products: Vim Vim.

## How do I fix CVE-2026-57452?

Upgrade to a fixed version.

## Is CVE-2026-57452 being exploited?

There is no known exploitation of CVE-2026-57452 in the wild and no public exploit code.

## Other vulnerabilities in Vim Vim

- [CVE-2020-20703](https://insights.sbomify.com/CVE-2020-20703/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-6349](https://insights.sbomify.com/CVE-2017-6349/): Integer overflow in n/a (critical 9.8)
- [CVE-2017-6350](https://insights.sbomify.com/CVE-2017-6350/): Integer overflow in n/a (critical 9.8)
- [CVE-2017-5953](https://insights.sbomify.com/CVE-2017-5953/): Integer overflow in n/a (critical 9.8)
- [CVE-2008-3075](https://insights.sbomify.com/CVE-2008-3075/): Command injection in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57452 and fix it if it is affected.

What it is: CVE-2026-57452 is a medium-severity vulnerability in Vim Vim, published on 25 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-57452 in the wild and no public exploit code.

Affected product: Vim Vim. 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-2026-57452/ (Markdown: https://insights.sbomify.com/CVE-2026-57452/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57452
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57452
- OSV: https://osv.dev/vulnerability/CVE-2026-57452

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57452/
Summaries are generated and may contain mistakes; the official description above is the record.