CVE-2026-33814
HIGH7.5EPSS 0.02%Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
Published: 5/7/2026Modified: 5/9/2026
Also known as:DEBIAN-CVE-2026-33814
Description
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.
Affected packages (4)
- Bitnami/golangfrom 0, < 1.25.10, >= 1.26.0-0, < 1.26.3
- Debian/golang-golang-x-netfrom 0
- Go/golang.org/x/netfrom 0, < 0.53.0
- Go/stdlibfrom 0, < 1.25.10, >= 1.26.0-0, < 1.26.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (7)
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-33814
- PATCHhttps://go.dev/cl/761581
- PATCHhttps://go.dev/cl/761640
- REPORThttps://go.dev/issue/78476
- WEBhttps://groups.google.com/g/golang-announce/c/qcCIEXso47M
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2026-33814
- WEBhttps://pkg.go.dev/vuln/GO-2026-4918