---
cve: "CVE-2026-48854"
severity: "HIGH"
cvss: 8.7
epss: "34%"
vendor: "elixir-grpc"
kev: false
exploited: false
published: "2026-06-15 23:16:45"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T00:04:06+02:00"
---

# CVE-2026-48854

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BEAM's memory and crash the server by streaming a large or slow-trickle unary request body.

'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3 (lib/grpc/server/adapters/cowboy/handler.ex) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the grpc-timeout header, the per-chunk read timeout resolves to :infinity, allowing a slow-trickle client to keep the connection alive indefinitely while memory grows. A single connection is sufficient to exhaust server memory and crash the node.

This issue affects grpc from 0.3.1 before 1.0.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 8105f803030f7f5ae1d722251ee6ab2e36878830 (Commit)
- 49e18c3ec6bb9afe2f712caad3dbab5c56a68a00 (Commit)

## Referenzen

- <https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj>
- <https://cna.erlef.org/cves/CVE-2026-48854.html>
- <https://osv.dev/vulnerability/EEF-CVE-2026-48854>
- <https://github.com/elixir-grpc/grpc/commit/49e18c3ec6bb9afe2f712caad3dbab5c56a68a00>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-48854) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_