CVE-2026-22782Public exploitNetwork attack vector

RPC call forgery via logged HMAC secret

Published Jan 16, 2026 · Updated Jan 16, 2026

Sensitive-data logging in RustFS 1.0.0-alpha.1 through 1.0.0-alpha.79 allows remote attackers to expose the shared RPC HMAC secret. The invalid-signature branch in crates/ecstore/src/rpc/http_auth.rs writes the secret and expected signature to error logs for any invalid RPC or admin request. Reading those logs is required to recover the secret, which permits forged RPC calls.

CVSS severity7.5
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in RustFS 1.0.0-alpha.1 through 1.0.0-alpha.79 allows remote attackers to expose the shared RPC HMAC secret. The invalid-signature branch in crates/ecstore/src/rpc/http_auth.rs writes the secret and expected signature to error logs for any invalid RPC or admin request. Reading those logs is required to recover the secret, which permits forged RPC calls.

The record

CVE
CVE-2026-22782
Published
Jan 16, 2026
Updated
Jan 16, 2026
Vendor
RustFS
Product
RustFS
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.0.0-alpha.1, < 1.0.0-alpha.80

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RustFS · RustFSversion=>= 1.0.0-alpha.1, < 1.0.0-alpha.80

Published CVSS scores

5.3GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.9GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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