EEF-CVE-2026-48853
- Source
- https://cna.erlef.org/osv/EEF-CVE-2026-48853.html
- Import Source
- https://cna.erlef.org/osv/EEF-CVE-2026-48853.json
- JSON Data
- https://api.osv.dev/v1/vulns/EEF-CVE-2026-48853
- Aliases
-
- CVE-2026-48853
- GHSA-grp7-v8xh-rj7h
- Published
- 2026-06-15T21:56:15.262Z
- Modified
- 2026-06-15T22:26:29.554932607Z
- 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
-
Summary
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.binary_to_term/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.
Configuration
GRPC.Codec.Erlpack must be explicitly registered as a codec on the gRPC server.
- Database specific
{ "cpe_ids": [ "cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*" ], "capec_ids": [ "CAPEC-586", "CAPEC-231" ], "cwe_ids": [ "CWE-502", "CWE-770" ] }- References
- Credits
-
-
- Peter Ullrich - FINDER
-
- Paulo Valente - REMEDIATION_DEVELOPER
-
- Jonatan Männchen - ANALYST
-
Affected packages
Hex / grpc
Package
- Name
- grpc
- Purl
- pkg:hex/grpc