Answer in brief
CVE-2019-9512 records a High severity (CVSS 7.5) vulnerability in Reset flood in net/http and golang.org/x/net/http. The current sources do not mark it as known exploited. The current feed maps 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 (go), stdlib (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/netgo | >=0 <0.0.0-20190813141303-74dc4d7220e7 | 0.0.0-20190813141303-74dc4d7220e7 |
| stdlibgo | >=0 <1.11.13 >=1.12.0-0 <1.12.8 | 1.11.13, 1.12.8 |
Published upstream
May 24, 2022
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. Servers that accept direct connections from untrusted clients could be remotely made to allocate an unlimited amount of memory, until the program crashes. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both. ### Specific Go Packages Affected golang.org/x/net/http2
Quoted source text, attributed separately from HOL analysis.