Answer in brief
CVE-2026-33814 records a High severity (CVSS 7.5) vulnerability in Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net. The current sources do not mark it as known exploited. The current feed maps golang.org/x/net/golang.org/x/net/http2 (generic), Go standard library/net/http (generic), golang.org/x/net (go), 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.
CVSS is 7.5. 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/golang.org/x/net/http2 (generic), Go standard library/net/http (generic), golang.org/x/net (go), stdlib (go). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:golang:http2:*:*:*:*:*:go:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/net/golang.org/x/net/http2generic | >=0 <0.53.0 | 0.53.0 |
| Go standard library/net/httpgeneric | >=0 <1.25.10 || >=1.26.0-0 <1.26.3 | 1.25.10, 1.26.3 |
| golang.org/x/netgo | >=0 <0.53.0 | 0.53.0 |
| stdlibgo | >=0 <1.25.10 >=1.26.0-0 <1.26.3 | 1.25.10, 1.26.3 |
Published upstream
May 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 2, 2026
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Quoted source text, attributed separately from HOL analysis.