CVE-2026-48853

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Source
https://cve.org/CVERecord?id=CVE-2026-48853
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48853.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-48853
Aliases
Downstream
Published
2026-06-15T21:56:15.262Z
Modified
2026-06-18T03:55:44.608666221Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Remote code execution and denial of service via unsafe Erlang term deserialization in elixir-grpc/grpc
Details

Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unauthenticated attackers to crash the BEAM node via atom table exhaustion and, when a decoded term flows into a call site that invokes it, achieve remote code execution on the server.

'Elixir.GRPC.Codec.Erlpack':decode/2 (lib/grpc/codec/erlpack.ex) calls :erlang.binarytoterm/1 on the raw gRPC message body without the :safe option, no size bound, and no type guard. Any unauthenticated peer that sends a request with Content-Type: application/grpc+erlpack can send a crafted payload that mints arbitrary new atoms (which are never garbage-collected, exhausting the bounded atom table and crashing the VM) or that encodes a fun term which, if applied anywhere downstream, executes attacker-controlled code inside the server process.

This issue affects grpc from 0.4.0 before 1.0.0.

Database specific 
{
    "cwe_ids": [
        "CWE-502",
        "CWE-770"
    ],
    "cna_assigner": "EEF",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48853.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "25bcc569fe2cc4478531a6c546c923205fc751c9"
                },
                {
                    "fixed": "272a97a5ea1b46af1819f14a831fcf35fc91f992"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/elixir-grpc/grpc

Affected ranges

Type
GIT
Repo
https://github.com/elixir-grpc/grpc
Events
Introduced
e45282526107417bd54f57bb8298b52a7c272ccb
Fixed
8105f803030f7f5ae1d722251ee6ab2e36878830
Fixed
272a97a5ea1b46af1819f14a831fcf35fc91f992
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0.4.0"
        },
        {
            "fixed": "1.0.0"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.11.2
v0.4.0
v0.5.0
v0.5.0-beta
v0.5.0-beta.1
v0.6.0
v0.7.0
v0.8.0
v0.8.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48853.json"