CVE-2023-23626EPSS p55.3%
CVE-2023-23626CVE-2023-23626
protocol / go-bitfield
Description
go-bitfield is a simple bitfield package for the go language aiming to be more performant that the standard library. When feeding untrusted user input into the size parameter of `NewBitfield` and `FromBytes` functions, an attacker can trigger `panic`s. This happen when the `size` is a not a multiple of `8` or is negative. There were already a note in the `NewBitfield` documentation, however known users of this package are subject to this issue. Users are advised to upgrade. Users unable to upgrade should ensure that `size` is a multiple of 8 before calling `NewBitfield` or `FromBytes`.
Scoring
| CVSS | 5.9 () |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 0.91% probability of exploitation · percentile 55.3% · 2026-06-18T12:00:27Z |
| Last modified | 2026-06-17 |