CVE-2026-48853

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.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-48853.html
https://github.com/elixir-grpc/grpc/commit/272a97a5ea1b46af1819f14a831fcf35fc91f992
https://github.com/elixir-grpc/grpc/security/advisories/GHSA-grp7-v8xh-rj7h
https://osv.dev/vulnerability/EEF-CVE-2026-48853
https://github.com/elixir-grpc/grpc/security/advisories/GHSA-grp7-v8xh-rj7h

Configurations

No configuration.

History

16 Jun 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://github.com/elixir-grpc/grpc/security/advisories/GHSA-grp7-v8xh-rj7h -~~	() https://github.com/elixir-grpc/grpc/security/advisories/GHSA-grp7-v8xh-rj7h -

15 Jun 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-15 23:16

Updated : 2026-06-17 10:55

NVD link : CVE-2026-48853

Mitre link : CVE-2026-48853

CVE.ORG link : CVE-2026-48853

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

CWE-770

Allocation of Resources Without Limits or Throttling

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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.\n\nThis issue affects grpc from 0.4.0 before 1.0.0."}], "lastModified": "2026-06-17T10:55:18.207", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}