CVE-2026-38993Public exploitNetwork attack vector

Authenticated arbitrary file write via path traversal

Published Apr 29, 2026 · Updated Apr 29, 2026

Path traversal in Cockpit CMS 2.13.5 and earlier allows remote authenticated users to write arbitrary files through the Buckets API. The controller concatenates unnormalized path and rename parameters into storage-operation targets, while its traversal check covers only the literal ../ sequence. A valid application session and CSRF token are required; successful requests can modify or replace content only within the uploads storage area.

CVSS severity6.5
Medium
EPSS probability0.84%
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 Cockpit CMS 2.13.5 and earlier allows remote authenticated users to write arbitrary files through the Buckets API. The controller concatenates unnormalized path and rename parameters into storage-operation targets, while its traversal check covers only the literal ../ sequence. A valid application session and CSRF token are required; successful requests can modify or replace content only within the uploads storage area.

The record

CVE
CVE-2026-38993
Published
Apr 29, 2026
Updated
Apr 29, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
authenticated

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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
6.5CISA ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1565.001Stored Data Manipulation

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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