CVE-2026-49290Network attack vector

Arbitrary file write via unsafe archive extraction

Published Jun 19, 2026 · Updated Jun 19, 2026

Path traversal in Slopsmith before 0.2.9-alpha.5 allows remote authenticated users to write arbitrary files via crafted archives. The unpack_psarc implementations append unvalidated PSARC entry names to the extraction root, while _unpack_zip calls ZipFile.extractall() without filtering members. Exploitation requires archive-import privileges; in the default root-running Docker deployment, writing into the plugin directory grants host code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.83%
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 Slopsmith before 0.2.9-alpha.5 allows remote authenticated users to write arbitrary files via crafted archives. The unpack_psarc implementations append unvalidated PSARC entry names to the extraction root, while _unpack_zip calls ZipFile.extractall() without filtering members. Exploitation requires archive-import privileges; in the default root-running Docker deployment, writing into the plugin directory grants host code execution.

The record

CVE
CVE-2026-49290
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
Byron Gamatos
Product
Slopsmith
Classifications
CWE-22, CWE-23, CWE-36, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 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=< 0.2.9-alpha.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Byron Gamatos · Slopsmithversion=< 0.2.9-alpha.5

Published CVSS scores

7.6GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23Relative Path Traversal
CWE-36Absolute Path Traversal
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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