CVE-2026-78669
Excessive CPU consumption from repeated initial window changes in net/http
En bref
- Sévérité
- HIGH 7.5
- EPSS
- EPSS 0.61 % · centile 49 (2026-10-27)
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Go
- Statut NVD
- Awaiting Analysis
Description
A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Faiblesses (CWE)
Avis
- GO-2026-6611 — Excessive CPU consumption from repeated initial window changes in net/http
Références européennes
- ENISA EUVD · EUVD-2026-95426
- GCVE · GCVE-0-2026-78669
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Go standard library · net/http | affected 0 < 1.26.9 |
| Go standard library · net/http/internal/http2 | affected 1.27.0-0 < 1.27.2 |
| golang.org/x/net · golang.org/x/net/http2 | affected 0 < 0.60.0 |
Références
- https://go.dev/cl/847186
- https://go.dev/cl/847308
- https://go.dev/issue/81742
- https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
- https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs
- https://pkg.go.dev/vuln/GO-2026-6611
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |