CVE-2025-31489

HIGH NUCLEI

MinIO - Incomplete Signature Validation for Unsigned-Trailer Uploads

Title source: nuclei
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-31489. PoCs published by manus-use. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains functional exploit code for CVE-2025-32433, targeting Erlang/OTP SSH. The PoC demonstrates a pre-authentication RCE vulnerability by sending crafted SSH packets to execute arbitrary commands on the server.

Description

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. The signature component of the authorization may be invalid, which would mean that as a client you can use any arbitrary secret to upload objects given the user already has prior WRITE permissions on the bucket. Prior knowledge of access-key, and bucket name this user might have access to - and an access-key with a WRITE permissions is necessary. However with relevant information in place, uploading random objects to buckets is trivial and easy via curl. This issue is fixed in RELEASE.2025-04-03T14-56-28Z.

Exploits (1)

github WORKING POC
by manus-use · postscriptpoc
https://github.com/manus-use/cve-pocs/tree/main/minio-CVE-2025-31489

This repository contains functional exploit code for CVE-2025-32433, targeting Erlang/OTP SSH. The PoC demonstrates a pre-authentication RCE vulnerability by sending crafted SSH packets to execute arbitrary commands on the server.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Erlang/OTP SSH (OTP-22.3.4.17)
No auth needed
Prerequisites: network access to the target SSH port · vulnerable Erlang/OTP version
devstral-2 · analyzed Feb 27, 2026 Full analysis →

Nuclei Templates (1)

MinIO - Incomplete Signature Validation for Unsigned-Trailer Uploads
HIGHVERIFIEDby iamnoooob,rootxharsh,pdresearch
Shodan: http.title:"minio console"
FOFA: app="minio-console" || title="minio console"

References (2)

Core 2
Core References
Issue Tracking x_refsource_misc
https://github.com/minio/minio/pull/21103

Scores

CVSS v4 8.7
EPSS 0.0139
EPSS Percentile 80.8%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-347
Status published
Products (2)
minio/minio 0 - 0.0.0-20250403145552-8c70975283f9Go
minio/minio < RELEASE.2025-04-03T14-56-28Z
Published Apr 03, 2025
Tracked Since Feb 18, 2026