CVE-2026-33329Public exploitNetwork attack vector

Authenticated file write and deletion via path traversal

Published Mar 24, 2026 · Updated Mar 24, 2026

Path traversal in FileRise 1.0.1 through 3.9.4 allows remote authenticated users to write or delete server files via chunked uploads. UploadModel::handleUpload concatenates the unsanitized resumableIdentifier into temporary chunk paths, then writes chunks or recursively removes that path. Upload permission is required; crafted GET requests can also disclose limited file or directory existence without modifying data.

CVSS severity8.1
High
EPSS probability0.44%
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 FileRise 1.0.1 through 3.9.4 allows remote authenticated users to write or delete server files via chunked uploads. UploadModel::handleUpload concatenates the unsanitized resumableIdentifier into temporary chunk paths, then writes chunks or recursively removes that path. Upload permission is required; crafted GET requests can also disclose limited file or directory existence without modifying data.

The record

CVE
CVE-2026-33329
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
error311
Product
FileRise
Classifications
CWE-22, CWE-73, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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=>= 1.0.1, < 3.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

error311 · FileRiseversion=>= 1.0.1, < 3.10.0

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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 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')
CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

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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