Answer in brief
CVE-2026-27136 records a Unknown severity vulnerability in Invoking duplicate attributes can cause XSS in golang.org/x/net/html. The current sources do not mark it as known exploited. The current feed maps golang.org/x/net (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 golang.org/x/net (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/netgo | >=0 <0.55.0 | 0.55.0 |
Published upstream
May 22, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Quoted source text, attributed separately from HOL analysis.