CVE-2026-27143
Missing bound checks can lead to memory corruption in safe Go in cmd/compile
9.8
CRITICAL
CVSS 3.1
EPSS 0.02%
Description
Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
How to fix CVE-2026-27143
To remediate CVE-2026-27143, upgrade the affected package to a fixed version below.
- —upgrade to 1.25.9 or later
- —no fix listed
- —no fix listed
- —no fix listed
- —upgrade to 1.25.9-1 or later
- —upgrade to 1.26.2-1 or later
- —upgrade to 1.25.9 or later
Is CVE-2026-27143 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- from 0, < 1.25.9, >= 1.26.0, < 1.26.2
- from 0
- from 0
- from 0
- from 0, < 1.25.9-1
- from 0, < 1.26.2-1
- from 0, < 1.25.9, >= 1.26.0-0, < 1.26.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |