High 7.5Published Aug 9, 2022

CVE-2022-32189Panic when decoding Float and Rat types in math/big

Updated under an hour ago (Oct 26, 2026, 9:00 PM ET)

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It affects Go standard library math/big and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Go standard library math/big

Exploited in the last 30 days

A too-short encoded message can cause a panic in Float.GobDecode and Rat GobDecode in math/big in Go before 1.17.13 and 1.18.5, potentially allowing a denial of service.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Go
NVD analysis: Modified
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Go standard library math/big go_standard_library:math_big (from the name)	before 1.17.13; from 1.18.0-0 before 1.18.5	CNA record
golang go golang:go	before 1.17.13; from 1.18.0 before 1.18.5	NVD

References

References

https://go.dev/cl/417774
https://go.googlesource.com/go/+/055113ef364337607e3e72ed7d48df67fde6fc66
https://go.dev/issue/53871
https://groups.google.com/g/golang-announce/c/YqYYG87xB10
https://pkg.go.dev/vuln/GO-2022-0537

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.