CVE-2023-40183Public exploitNetwork attack vector

Cookie theft via unrestricted HTML-capable image upload

Published Sep 21, 2023 · Updated Sep 24, 2024

Unrestricted file upload in FIT2CLOUD DataEase before 1.18.11 allows remote attackers to steal user cookies through crafted images. StaticResourceService.isImage accepts an uploaded file after ImageIO.read validates its image content but does not restrict the original filename extension, allowing image-and-HTML polyglots to be served as HTML. No authentication is required to upload the crafted file; cookie theft occurs when a user follows the resulting static-resource link.

CVSS severity7.5
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in FIT2CLOUD DataEase before 1.18.11 allows remote attackers to steal user cookies through crafted images. StaticResourceService.isImage accepts an uploaded file after ImageIO.read validates its image content but does not restrict the original filename extension, allowing image-and-HTML polyglots to be served as HTML. No authentication is required to upload the crafted file; cookie theft occurs when a user follows the resulting static-resource link.

The record

CVE
CVE-2023-40183
Published
Sep 21, 2023
Updated
Sep 24, 2024
Vendor
FIT2CLOUD
Product
DataEase
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record 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=< 1.18.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FIT2CLOUD · DataEaseversion=< 1.18.11

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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