CVE-2026-42314Public exploitNetwork attack vector

Authenticated file write via overlapping path separators

Published May 11, 2026 · Updated May 11, 2026

Path traversal in pyLoad before 0.5.0b3.dev100 allows remote authenticated users to write downloaded files outside the download directory. The add_package() sanitizer performs single-pass replacement of ../ and ..\ sequences, so crafted overlapping separators leave parent-directory tokens for OS resolution. ADD permission is required, and exploitation can overwrite files writable by the pyLoad process or place downloaded content in unintended directories.

CVSS severity6.5
Medium
EPSS probability0.34%
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 pyLoad before 0.5.0b3.dev100 allows remote authenticated users to write downloaded files outside the download directory. The add_package() sanitizer performs single-pass replacement of ../ and ..\ sequences, so crafted overlapping separators leave parent-directory tokens for OS resolution. ADD permission is required, and exploitation can overwrite files writable by the pyLoad process or place downloaded content in unintended directories.

The record

CVE
CVE-2026-42314
Published
May 11, 2026
Updated
May 11, 2026
Vendor
pyLoad
Product
pyLoad
Classifications
CWE-22, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=< 0.5.0b3.dev100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pyLoad · pyLoadversion=< 0.5.0b3.dev100

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1105Ingress Tool Transfer

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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