CVE-2026-61843Public exploitNetwork attack vectorHinoki check available

File overwrite via unchecked upload filename collisions

Published Oct 14, 2026 · Updated Oct 14, 2026

Missing authorization in FileRise before 3.18.0 allows remote attackers to overwrite existing shared-folder files via same-name uploads. UploadModel replaces destinations through move_uploaded_file() or truncates them with fopen(..., 'wb') without collision authorization, retaining the original uploader metadata. Public uploads require a valid upload-enabled share token and any configured password; authenticated upload-only users also replace files without edit authority, destroying or changing existing content.

CVSS severity8.2
High
EPSS probability0.31%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in FileRise before 3.18.0 allows remote attackers to overwrite existing shared-folder files via same-name uploads. UploadModel replaces destinations through move_uploaded_file() or truncates them with fopen(..., 'wb') without collision authorization, retaining the original uploader metadata. Public uploads require a valid upload-enabled share token and any configured password; authenticated upload-only users also replace files without edit authority, destroying or changing existing content.

The record

CVE
CVE-2026-61843
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
error311
Product
FileRise
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=< 3.18.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

error311 · FileRiseversion=< 3.18.0

Published CVSS scores

8.2GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
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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