Elixir-grpc
CVE-2026-121808: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-grpc grpc_core and grpc allows unauthenticated attackers to exhaust ser
CVE-2026-121808 Nov 13, 2026 Source: Vendor
Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-grpc grpc_core and grpc allows unauthenticated attackers to exhaust server memory via a compressed Erlang external term in a gRPC message body.
GRPC.Codec.Erlpack.decode/2 (grpc_core/lib/grpc/codec/erlpack.ex, and lib/grpc/codec/erlpack.ex before the package split) passes the message body to :erlang.binary_to_term/2. That function inflates a compressed term in full before it returns. The codec sets no limit
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-121808
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CVE-2026-121808
BR2026-0000-048510
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Credited as Jace
CVE-2026-121808
BR2026-0000-048511
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Credited as zx
CVE-2026-121808
BR2026-0000-048512
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Credited as Jiacheng Zhong
CVE-2026-121808
BR2026-0000-048513
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Credited as Zhun Wang
CVE-2026-121808
BR2026-0000-048514
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Credited as Junmin Zhu
CVE-2026-121808
BR2026-0000-048515
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Credited as Hongwei Li
CVE-2026-121808
BR2026-0000-048516
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Credited as Han Dai
CVE-2026-121808
BR2026-0000-048517
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Credited as Suyue Guo
CVE-2026-121808
BR2026-0000-048518
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Credited as Songyang Peng
CVE-2026-121808
BR2026-0000-048519
unclaimed
Credited as Ziyue Pan