Answer in brief
CVE-2026-27143 records a Unknown severity vulnerability in Missing bound checks can lead to memory corruption in safe Go in cmd/compile. The current sources do not mark it as known exploited. The current feed maps toolchain (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps toolchain (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| toolchaingo | >=0 <1.25.9 >=1.26.0-0 <1.26.2 | 1.25.9, 1.26.2 |
Published upstream
Apr 7, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
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.
Quoted source text, attributed separately from HOL analysis.