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DataEase CVE-2026-49867

| EUVDEUVD-2026-44786 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-07-15 GitHub_M
XSS Dataease
6.3
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.4 MEDIUM

Network-reachable stored XSS requires low-privilege auth to plant and passive victim load; scope changes because script executes in victim's browser origin context, not attacker's.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

3
Patch available
Jul 15, 2026 - 22:33 EUVD
Source Code Evidence Fetched
Jul 15, 2026 - 20:31 vuln.today
Analysis Generated
Jul 15, 2026 - 20:31 vuln.today

DescriptionCVE.org

DataEase is an open source data visualization and analysis tool. Prior to 2.10.23, DataEase template static resources let authenticated users submit TemplateManageRequest.staticResource through POST /de2api/templateManage/save or DataVisualizationServer.decompression, after which StaticResourceServer.saveFilesToServe and StaticResourceServer.saveSingleFileToServe write Base64-decoded .svg content to /de2api/static-resource/<name>.svg without validating extension, MIME type, decoded bytes, or SVG scriptability, causing stored same-origin cross-site scripting when a victim loads the resource. This issue is fixed in version 2.10.23.

AnalysisAI

Stored cross-site scripting in DataEase's template static resource pipeline allows authenticated users to persist malicious JavaScript inside SVG files served at the application's same origin, executing in victims' browsers upon resource access. Versions prior to 2.10.23 are affected; the root cause is that StaticResourceServer.saveFilesToServe and saveSingleFileToServe decoded attacker-supplied Base64 content and wrote it directly to disk without validating extension, MIME type, decoded bytes, or SVG scriptability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Authenticate with low-privilege DataEase account
Delivery
Craft Base64-encoded SVG with embedded JavaScript payload
Exploit
Submit malicious SVG via POST /de2api/templateManage/save or decompression API
Install
Server writes unvalidated SVG to /de2api/static-resource/<name>.svg
C2
Victim user loads template or dashboard referencing the resource
Execute
Browser executes attacker script in victim's authenticated same-origin session
Impact
Exfiltrate session token or perform actions as victim
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated session with at least low-privilege access to the DataEase application - unauthenticated exploitation is not possible per the PR:L CVSS metric. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N) scores 6.3 and accurately reflects the attack profile: network-reachable, low complexity, authenticated low-privilege initiator, passive victim interaction required. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with a low-privilege DataEase account crafts a template import package or API request to POST /de2api/templateManage/save containing a Base64-encoded SVG file embedding a JavaScript payload (for example, a script tag or onload event handler that exfiltrates document.cookie to an attacker-controlled server). The SVG is written to /de2api/static-resource/<name>.svg on the server. …
Remediation The primary fix is to upgrade DataEase to version 2.10.23, which is confirmed available at https://github.com/dataease/dataease/releases/tag/v2.10.23 and includes the complete validation rewrite in StaticResourceServer. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-49867 vulnerability details – vuln.today
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