CVE-2026-7588Public exploitNetwork attack vector

Unauthenticated local file reads via template traversal

Published May 1, 2026 · Updated May 1, 2026

Path traversal in ggerve coding-standards-mcp allows remote attackers to read suffix-matching local files via the language argument. get_style_guide and get_best_practices append fixed Markdown suffixes to untrusted input, while read_template joins and opens the resulting path without verifying that it remains under templates. Exploitation requires access to either MCP tool and a readable target whose name ends in _style_guide.md or _best_practices.md.

CVSS severity5.3
Medium
EPSS probability0.45%
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 ggerve coding-standards-mcp allows remote attackers to read suffix-matching local files via the language argument. get_style_guide and get_best_practices append fixed Markdown suffixes to untrusted input, while read_template joins and opens the resulting path without verifying that it remains under templates. Exploitation requires access to either MCP tool and a readable target whose name ends in _style_guide.md or _best_practices.md.

The record

CVE
CVE-2026-7588
Published
May 1, 2026
Updated
May 1, 2026
Vendor
ggerve
Product
coding-standards-mcp
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 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=5b097a3d6ff668d15c610911d20d2ce0d08cfc5a
  2. Affected versionversion=94f619198724f79d1ea53992184eb4ba61418810
  3. Affected versionversion=c21ab2754684329eab4feb72427dc9acfe61e52f

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ggerve · coding-standards-mcpversion=5b097a3d6ff668d15c610911d20d2ce0d08cfc5a; version=94f619198724f79d1ea53992184eb4ba61418810; version=c21ab2754684329eab4feb72427dc9acfe61e52f

Published CVSS scores

5.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.5VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.0VulDB CNAAV:N/AC:L/Au:N/C:P/I:N/A:N

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-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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