# CVE-2026-53432: Integer Overflow in fzf

> An attacker can cause a denial of service in fzf by providing specific long inputs that trigger an integer overflow and crash the application.

- **Severity:** Medium 5.6 (`CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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:** 30 Jun 2026
- **Updated:** 30 Jun 2026
- **Also known as:** DEBIAN-CVE-2026-53432, GHSA-rrf5-grxg-q8mm, UBUNTU-CVE-2026-53432

## What is CVE-2026-53432?

CVE-2026-53432 is a medium-severity vulnerability in fzf, published on 30 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

fzf is vulnerable to Integer Overflow leading to crash in FuzzyMatchV2 function. When input line length is approximately 2,200,000 bytes and pattern length is 999 bytes, the product overflows. The Go runtime detects the invalid slice bounds and terminates the process immediately with a non-recoverable panic.

This issue was fixed in version 0.73.1.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2026-53432?

It affects 1 product.


Products: Junegunn Fzf.

## How do I fix CVE-2026-53432?

Upgrade to a fixed version.

## Is CVE-2026-53432 being exploited?

There is no known exploitation of CVE-2026-53432 in the wild and no public exploit code.

## Other vulnerabilities in fzf

- [CVE-2026-53433](https://insights.sbomify.com/CVE-2026-53433/): Denial of Service in fzf (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-53432 and fix it if it is affected.

What it is: CVE-2026-53432 is a medium-severity vulnerability in fzf, published on 30 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-2026-53432 in the wild and no public exploit code.

Affected product: fzf. 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-2026-53432/ (Markdown: https://insights.sbomify.com/CVE-2026-53432/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-53432
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-53432
- OSV: https://osv.dev/vulnerability/CVE-2026-53432

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-53432/
Summaries are generated and may contain mistakes; the official description above is the record.