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.
- 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
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
Which versions are affected by CVE-2026-53432?
It affects 1 product.
Products include 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
Sources
Also known as DEBIAN-CVE-2026-53432, GHSA-rrf5-grxg-q8mm, UBUNTU-CVE-2026-53432.