SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

CVE-2026-56851

The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer.

HIGH 7.5EPSS 0.47%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.47% probability · 40th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Source
security@golang.org
EPSS trend
0%3%5%8 October 2026: 0.15%26 October 2026: 0.47%8 October 202626 October 2026

EPSS moved from 0.2% on 8 October 2026 to 0.5% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.