CVE-2026-65891Network attack vectorHinoki check available

Authenticated file overwrite via unchecked rename destination

Published Jul 29, 2026 · Updated Jul 29, 2026

Improper input validation in JCE Editor before 2.9.99.10 allows remote authenticated users to create hidden files or overwrite existing files. The filesystem rename functions accept otherwise invalid destination names and replace an existing destination instead of rejecting the operation. Reachability requires access to a file-related JCE plugin and rename permission; impact is limited to files in the browsed folder.

CVSS severity6.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper input validation in JCE Editor before 2.9.99.10 allows remote authenticated users to create hidden files or overwrite existing files. The filesystem rename functions accept otherwise invalid destination names and replace an existing destination instead of rejecting the operation. Reachability requires access to a file-related JCE plugin and rename permission; impact is limited to files in the browsed folder.

The record

CVE
CVE-2026-65891
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Widget Factory Limited
Product
JCE Editor
Classifications
CWE-20, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0-2.9.99.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Widget Factory Limited · JCE Editorversion=1.0.0-2.9.99.9

Published CVSS scores

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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