Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-53430— grpc gzip decompression bomb in GRPC.Compressor.Gzip.decompress/1

Quick assessment

Affected
elixir-grpc grpc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

elixir-grpc grpc是elixir-grpc的一个实现gRPC协议的开源框架。 elixir-grpc grpc 0.4.0版本至1.0.0之前版本存在资源管理错误漏洞，该漏洞源于Gzip压缩处理不当，可能导致未经身份验证的远程攻击者通过发送特制的单帧数据，耗尽BEAM节点堆内存并触发内存耗尽。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
elixir-grpc grpc 0.4.0< 1.0.0 affected
beae6800fc8baf126f3fe7107d86a50e105275ba< 1afbab9d57d2a3e16ca9c62ffa4923338ea96cfc affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-53430

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
grpc gzip decompression bomb in GRPC.Compressor.Gzip.decompress/1
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-grpc grpc (GRPC.Compressor.Gzip, GRPC.Message modules) allows a denial of service via a gzip decompression bomb. This vulnerability is associated with program files lib/grpc/compressor/gzip.ex, lib/grpc/message.ex and program routines 'Elixir.GRPC.Compressor.Gzip':decompress/1, 'Elixir.GRPC.Message':from_data/2. 'Elixir.GRPC.Compressor.Gzip':decompress/1 calls :zlib.gunzip/1 directly on attacker-controlled bytes with no decompressed-size limit, ratio check, or incremental decoding. Because this module is the registered gzip GRPC.Compressor implementation, it is invoked automatically whenever an incoming gRPC frame carries the grpc-encoding: gzip header. :zlib.gunzip/1 allocates the entire decompressed result as a single binary, so a small highly compressible payload (for example a few kilobytes of zeros, which gzip compresses at roughly 1000:1) expands to multiple gigabytes inside a single call. The max_receive_message_length limit is enforced only against the already-decompressed message, so it provides no protection. An unauthenticated remote peer can send a single crafted frame to exhaust the BEAM node's heap and trigger an out-of-memory kill. This issue affects grpc: from 0.4.0 before 1.0.0.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
elixir-grpc grpc 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
elixir-grpc grpc是elixir-grpc的一个实现gRPC协议的开源框架。 elixir-grpc grpc 0.4.0版本至1.0.0之前版本存在资源管理错误漏洞，该漏洞源于Gzip压缩处理不当，可能导致未经身份验证的远程攻击者通过发送特制的单帧数据，耗尽BEAM节点堆内存并触发内存耗尽。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
elixir-grpc grpc 0.4.0 ~ 1.0.0 cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*
elixir-grpc grpc beae6800fc8baf126f3fe7107d86a50e105275ba ~ 1afbab9d57d2a3e16ca9c62ffa4923338ea96cfc cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-53430

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-53430

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-53430 (1)

Vendor Advisories for CVE-2026-53430 (2)

Other References for CVE-2026-53430 (1)

Same Patch Batch · elixir-grpc · 2026-06-15 · 4 CVEs total

CVE-2026-48853 9.2 CRITICAL Remote code execution and denial of service via unsafe Erlang term deserialization in elix
CVE-2026-48854 8.7 HIGH Unbounded request body accumulation causes memory exhaustion in elixir-grpc/grpc
CVE-2026-48599 7.6 HIGH Authorization bypass via path binding override in elixir-grpc/grpc HTTP transcoding

IV. Related Vulnerabilities

Same product: grpc
Same vendor: elixir-grpc
Same weakness: CWE-409

V. Comments for CVE-2026-53430

No comments yet

Leave a comment