CVE-2026-53432

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.

CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor	Product	Versions
junegunn	fzf	< 0.73.1

References

Advisories & Patches

https://github.com/junegunn/fzf/commit/ccedd064ca56921a4235219516b3d834f60e7b91

Other References

https://cert.pl/en/posts/2026/06/CVE-2026-53432 https://github.com/junegunn/fzf

Frequently Asked Questions

What is CVE-2026-53432? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-53432? +

CVE-2026-53432 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-53432? +

CVE-2026-53432 affects products from junegunn, specifically: fzf. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-53432? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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