← Vulnerability feed

Vulnerability record · CVE-2026-22782 · published 16 January 2026

CVE-2026-22782: Rustfs sensitive information in log file vulnerability

Rustfs · Rustfs

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.

2.9 CVSS 4.0 Low EPSS 0.53% · top 57.1% CWE-532 · Sensitive information in log file
2.9CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rustfs/rustfs/blob/9e162b6e9ebb874cc1d06a7b33bc4a05786578aa/crates/ecstore/src/rpc/http_auth.rs#L115- Patch
https://github.com/rustfs/rustfs/commit/6b2eebee1d07399ef02c0863bd515b4412a5a560 Patch
https://github.com/rustfs/rustfs/security/advisories/GHSA-333v-68xh-8mmq ExploitVendor Advisory

Track CVE-2026-22782 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-68926Rustfs improper authentication vulnerabilityRustFS is a distributed object storage system built in Rust. In versions prior to 1.0.0-alpha.78, RustFS implements gRPC authentication using a hardc…EPSS 32%9.1CVE-2026-27607Rustfs improper input validation vulnerabilityRustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.56 through 1.0.0-alpha.82, RustFS does not validate policy condi…EPSS 0.41%8.8CVE-2025-68705Rustfs path traversal vulnerabilityRustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerabi…EPSS 7.4%8.3CVE-2026-40937Rustfs missing authorization vulnerabilityRustFS is a distributed object storage system built in Rust. Prior to 1.0.0-alpha.94, all four notification target admin API endpoints in `rustfs/src…EPSS 0.49%7.7CVE-2026-21862Rustfs authentication bypass by spoofing vulnerabilityRustFS is a distributed object storage system built in Rust. Prior to version alpha.78, IP-based access control can be bypassed: get_condition_values…EPSS 0.25%6.9CVE-2026-24762Rustfs sensitive information in log file vulnerabilityRustFS is a distributed object storage system built in Rust. From versions alpha.13 to alpha.81, RustFS logs sensitive credential material (access ke…EPSS 0.28%5.7CVE-2026-22043Rustfs improper privilege management vulnerabilityRustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in…EPSS 0.43%5.7CVE-2026-22042Rustfs improper authorization vulnerabilityRustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.79, he `ImportIam` admin API validates permissions using `E…EPSS 0.44%

Source: NIST National Vulnerability Database (record CVE-2026-22782), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.