CVE-2026-7810Public exploitNetwork attack vector

File read and write via unchecked workspace paths

Published May 5, 2026 · Updated May 5, 2026

Path traversal in Python Notebook MCP allows remote attackers to read or write notebook files outside the initialized workspace. The duplicated server.py resolve_path logic accepts absolute paths and joins relative paths to WORKSPACE_DIR without canonicalization or a containment check. Exploitation requires MCP tool access, workspace initialization, and service-account access to the target; commit a05a232815809a7e425b5fa7be26e0d4369894c2 is affected.

CVSS severity7.3
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Python Notebook MCP allows remote attackers to read or write notebook files outside the initialized workspace. The duplicated server.py resolve_path logic accepts absolute paths and joins relative paths to WORKSPACE_DIR without canonicalization or a containment check. Exploitation requires MCP tool access, workspace initialization, and service-account access to the target; commit a05a232815809a7e425b5fa7be26e0d4369894c2 is affected.

The record

CVE
CVE-2026-7810
Published
May 5, 2026
Updated
May 5, 2026
Vendor
UsamaK98
Product
Python Notebook MCP
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=a05a232815809a7e425b5fa7be26e0d4369894c2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UsamaK98 · Python Notebook MCPversion=a05a232815809a7e425b5fa7be26e0d4369894c2

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1005Data from Local System

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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