Answer in brief
CVE-2026-111943 records a Unknown severity vulnerability in Distrust compromised intermediate certificates in crypto/x509. The current sources do not mark it as known exploited. The current feed maps Go standard library/crypto/x509 (generic), stdlib (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 Go standard library/crypto/x509 (generic), stdlib (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Go standard library/crypto/x509generic | >=0 <1.26.10 || >=1.27.0-0 <1.27.3 | 1.26.10, 1.27.3 |
| stdlibgo | >=0 <1.26.10 >=1.27.0-0 <1.27.3 | 1.26.10, 1.27.3 |
Published upstream
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.
Quoted source text, attributed separately from HOL analysis.