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CVE-2026-22782— RustFS RPC signature verification logs shared secret

Quick assessment

Affected
rustfs rustfs
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.

rustfs是RustFS开源的一个高性能对象存储系统。 RustFS 1.0.0-alpha.1版本至1.0.0-alpha.79版本存在日志信息泄露漏洞，该漏洞源于无效RPC签名导致服务器记录共享HMAC密钥，可能导致伪造RPC调用。

AI Predicted 9.1 Difficulty: Easy EPSS 0.53% · P43
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I. Basic Information for CVE-2026-22782

Vulnerability Information
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Vulnerability Title
RustFS RPC signature verification logs shared secret
Source: CVE Program / CVE List V5
Vulnerability Description
RustFS is a distributed object storage system built in Rust. From >= 1.0.0-alpha.1 to 1.0.0-alpha.79, invalid RPC signatures cause the server to log the shared HMAC secret (and expected signature), which exposes the secret to log readers and enables forged RPC calls. In crates/ecstore/src/rpc/http_auth.rs, the invalid signature branch logs sensitive data. This log line includes secret and expected_signature, both derived from the shared HMAC key. Any invalidly signed request triggers this path. The function is reachable from RPC and admin request handlers. This vulnerability is fixed in 1.0.0-alpha.80.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
rustfs 日志信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rustfs是RustFS开源的一个高性能对象存储系统。 RustFS 1.0.0-alpha.1版本至1.0.0-alpha.79版本存在日志信息泄露漏洞，该漏洞源于无效RPC签名导致服务器记录共享HMAC密钥，可能导致伪造RPC调用。
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
rustfs rustfs >= 1.0.0-alpha.1, < 1.0.0-alpha.80 -

II. Public POCs for CVE-2026-22782

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III. Intelligence Information for CVE-2026-22782

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Patches & Fixes for CVE-2026-22782 (1)

Vendor Advisories for CVE-2026-22782 (1)

IV. Related Vulnerabilities

Same product: rustfs
Same vendor: rustfs
Same weakness: CWE-532

V. Comments for CVE-2026-22782

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