CVE-2026-7404Public exploitNetwork attack vector

File deletion via unchecked prompt path

Published Apr 29, 2026 · Updated Apr 29, 2026

Relative path traversal in GetSimpleTool mcpo-simple-server 0.1 and 0.2.0 allows remote attackers to delete files via crafted prompt details. The delete_shared_prompt function builds a path from caller-controlled prompt data, tests it with os.path.exists, and passes it to os.remove without canonicalization or a directory-boundary check. Reachability requires access to the exposed prompt-deletion workflow, and deletion is limited to files writable by the server process.

CVSS severity7.3
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Relative path traversal in GetSimpleTool mcpo-simple-server 0.1 and 0.2.0 allows remote attackers to delete files via crafted prompt details. The delete_shared_prompt function builds a path from caller-controlled prompt data, tests it with os.path.exists, and passes it to os.remove without canonicalization or a directory-boundary check. Reachability requires access to the exposed prompt-deletion workflow, and deletion is limited to files writable by the server process.

The record

CVE
CVE-2026-7404
Published
Apr 29, 2026
Updated
Apr 29, 2026
Vendor
GetSimpleTool
Product
mcpo-simple-server
Classifications
CWE-22, CWE-23, T1070.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0.1
  2. Affected versionversion=0.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GetSimpleTool · mcpo-simple-serverversion=0.1; version=0.2.0

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23Relative Path Traversal
T1070.004File Deletion

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo